# Class ListMigrationSubtasksRequest.Builder (0.94.0)

0.94.0 (latest) 0.91.0 0.90.0 0.88.0 0.86.0 0.85.0 0.84.0 0.83.0 0.81.0 0.79.0 0.78.0 0.77.0 0.76.0 0.75.0 0.73.0 0.71.0 0.70.0 0.67.0 0.66.0 0.65.0 0.63.0 0.62.0 0.61.0 0.60.0 0.59.0 0.58.0 0.57.0 0.56.0 0.55.0 0.54.0 0.52.0 0.51.0 0.50.0 0.49.0 0.48.0 0.47.0 0.46.0 0.45.0 0.44.0 0.43.0 0.42.0 0.40.0 0.39.0 0.38.0 0.37.0 0.36.0 0.35.0 0.34.0 0.33.0 0.32.0 0.31.0 0.30.0 0.27.0 0.26.0 0.25.0 0.24.0 0.23.0 0.22.0 0.21.0 0.20.0 0.19.0 0.18.0 0.17.0 0.16.0 0.15.0 0.14.0 0.13.0 0.12.0 0.11.0 0.10.0 0.9.0 0.8.0 0.7.0 0.6.2 0.5.0 0.4.0 0.3.0 0.2.4

    public static final class ListMigrationSubtasksRequest.Builder extends GeneratedMessage.Builder<ListMigrationSubtasksRequest.Builder> implements ListMigrationSubtasksRequestOrBuilder

A request to list previously created migration subtasks.

Protobuf type `google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest`

## Inheritance

[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \> [AbstractMessageLite.Builder\<MessageType,BuilderType\>](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder.html) \> [AbstractMessage.Builder\<BuilderType\>](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html) \> [GeneratedMessage.Builder](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.Builder.html) \> ListMigrationSubtasksRequest.Builder

## Implements

[ListMigrationSubtasksRequestOrBuilder](https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequestOrBuilder)

## Inherited Members

[AbstractMessage.Builder.findInitializationErrors()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_findInitializationErrors__) [AbstractMessage.Builder.getInitializationErrorString()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_getInitializationErrorString__) [AbstractMessage.Builder.internalMergeFrom(AbstractMessageLite)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_internalMergeFrom_com_google_protobuf_AbstractMessageLite_) [AbstractMessage.Builder.mergeFrom(byte\[\])](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_mergeFrom_byte___) 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## Static Methods

### getDescriptor()

    public static final Descriptors.Descriptor getDescriptor()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Descriptors.Descriptor.html` |   |

## Methods

### build()

    public ListMigrationSubtasksRequest build()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest` |   |

### buildPartial()

    public ListMigrationSubtasksRequest buildPartial()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest` |   |

### clear()

    public ListMigrationSubtasksRequest.Builder clear()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

**Overrides** [GeneratedMessage.Builder\<BuilderType\>.clear()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.Builder.html#com_google_protobuf_GeneratedMessage_Builder_clear__)

### clearFilter()

    public ListMigrationSubtasksRequest.Builder clearFilter()

Optional. The filter to apply. This can be used to get the subtasks of a
specific tasks in a workflow, e.g. `migration_task = "ab012"` where
`"ab012"` is the task ID (not the name in the named map).

`string filter = 5 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### clearPageSize()

    public ListMigrationSubtasksRequest.Builder clearPageSize()

Optional. The maximum number of migration tasks to return. The service may
return fewer than this number.

`int32 page_size = 3 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### clearPageToken()

    public ListMigrationSubtasksRequest.Builder clearPageToken()

Optional. A page token, received from previous `ListMigrationSubtasks`
call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to `ListMigrationSubtasks`
must match the call that provided the page token.

`string page_token = 4 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### clearParent()

    public ListMigrationSubtasksRequest.Builder clearParent()

Required. The migration task of the subtasks to list.
Example: `projects/123/locations/us/workflows/1234`

`
string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### clearReadMask()

    public ListMigrationSubtasksRequest.Builder clearReadMask()

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

### getDefaultInstanceForType()

    public ListMigrationSubtasksRequest getDefaultInstanceForType()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest` |   |

### getDescriptorForType()

    public Descriptors.Descriptor getDescriptorForType()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Descriptors.Descriptor.html` |   |

**Overrides** [GeneratedMessage.Builder\<BuilderType\>.getDescriptorForType()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.Builder.html#com_google_protobuf_GeneratedMessage_Builder_getDescriptorForType__)

### getFilter()

    public String getFilter()

Optional. The filter to apply. This can be used to get the subtasks of a
specific tasks in a workflow, e.g. `migration_task = "ab012"` where
`"ab012"` is the task ID (not the name in the named map).

`string filter = 5 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` | The filter. |

### getFilterBytes()

    public ByteString getFilterBytes()

Optional. The filter to apply. This can be used to get the subtasks of a
specific tasks in a workflow, e.g. `migration_task = "ab012"` where
`"ab012"` is the task ID (not the name in the named map).

`string filter = 5 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` | The bytes for filter. |

### getPageSize()

    public int getPageSize()

Optional. The maximum number of migration tasks to return. The service may
return fewer than this number.

`int32 page_size = 3 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | The pageSize. |

### getPageToken()

    public String getPageToken()

Optional. A page token, received from previous `ListMigrationSubtasks`
call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to `ListMigrationSubtasks`
must match the call that provided the page token.

`string page_token = 4 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` | The pageToken. |

### getPageTokenBytes()

    public ByteString getPageTokenBytes()

Optional. A page token, received from previous `ListMigrationSubtasks`
call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to `ListMigrationSubtasks`
must match the call that provided the page token.

`string page_token = 4 [(.google.api.field_behavior) = OPTIONAL];`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` | The bytes for pageToken. |

### getParent()

    public String getParent()

Required. The migration task of the subtasks to list.
Example: `projects/123/locations/us/workflows/1234`

`
string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` | The parent. |

### getParentBytes()

    public ByteString getParentBytes()

Required. The migration task of the subtasks to list.
Example: `projects/123/locations/us/workflows/1234`

`
string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` | The bytes for parent. |

### getReadMask()

    public FieldMask getReadMask()

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMask.html` | The readMask. |

### getReadMaskBuilder()

    public FieldMask.Builder getReadMaskBuilder()

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMask.Builder.html` |   |

### getReadMaskOrBuilder()

    public FieldMaskOrBuilder getReadMaskOrBuilder()

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMaskOrBuilder.html` |   |

### hasReadMask()

    public boolean hasReadMask()

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | Whether the readMask field is set. |

### internalGetFieldAccessorTable()

    protected GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.FieldAccessorTable.html` |   |

**Overrides** [GeneratedMessage.Builder\<BuilderType\>.internalGetFieldAccessorTable()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.Builder.html#com_google_protobuf_GeneratedMessage_Builder_internalGetFieldAccessorTable__)

### isInitialized()

    public final boolean isInitialized()

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` |   |

**Overrides** [GeneratedMessage.Builder\<BuilderType\>.isInitialized()](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessage.Builder.html#com_google_protobuf_GeneratedMessage_Builder_isInitialized__)

### mergeFrom(ListMigrationSubtasksRequest other)

    public ListMigrationSubtasksRequest.Builder mergeFrom(ListMigrationSubtasksRequest other)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `other` | `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

### mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

    public ListMigrationSubtasksRequest.Builder mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `input` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.CodedInputStream.html` |
| `extensionRegistry` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

**Overrides** [AbstractMessage.Builder\<BuilderType\>.mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_mergeFrom_com_google_protobuf_CodedInputStream_com_google_protobuf_ExtensionRegistryLite_)

| **Exceptions** ||
|---|---|
| **Type** | **Description** |
| `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` |   |

### mergeFrom(Message other)

    public ListMigrationSubtasksRequest.Builder mergeFrom(Message other)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `other` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.Message.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

**Overrides** [AbstractMessage.Builder\<BuilderType\>.mergeFrom(Message other)](https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessage.Builder.html#com_google_protobuf_AbstractMessage_Builder_mergeFrom_com_google_protobuf_Message_)

### mergeReadMask(FieldMask value)

    public ListMigrationSubtasksRequest.Builder mergeReadMask(FieldMask value)

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMask.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

### setFilter(String value)

    public ListMigrationSubtasksRequest.Builder setFilter(String value)

Optional. The filter to apply. This can be used to get the subtasks of a
specific tasks in a workflow, e.g. `migration_task = "ab012"` where
`"ab012"` is the task ID (not the name in the named map).

`string filter = 5 [(.google.api.field_behavior) = OPTIONAL];`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` The filter to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setFilterBytes(ByteString value)

    public ListMigrationSubtasksRequest.Builder setFilterBytes(ByteString value)

Optional. The filter to apply. This can be used to get the subtasks of a
specific tasks in a workflow, e.g. `migration_task = "ab012"` where
`"ab012"` is the task ID (not the name in the named map).

`string filter = 5 [(.google.api.field_behavior) = OPTIONAL];`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` The bytes for filter to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setPageSize(int value)

    public ListMigrationSubtasksRequest.Builder setPageSize(int value)

Optional. The maximum number of migration tasks to return. The service may
return fewer than this number.

`int32 page_size = 3 [(.google.api.field_behavior) = OPTIONAL];`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` The pageSize to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setPageToken(String value)

    public ListMigrationSubtasksRequest.Builder setPageToken(String value)

Optional. A page token, received from previous `ListMigrationSubtasks`
call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to `ListMigrationSubtasks`
must match the call that provided the page token.

`string page_token = 4 [(.google.api.field_behavior) = OPTIONAL];`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` The pageToken to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setPageTokenBytes(ByteString value)

    public ListMigrationSubtasksRequest.Builder setPageTokenBytes(ByteString value)

Optional. A page token, received from previous `ListMigrationSubtasks`
call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided to `ListMigrationSubtasks`
must match the call that provided the page token.

`string page_token = 4 [(.google.api.field_behavior) = OPTIONAL];`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` The bytes for pageToken to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setParent(String value)

    public ListMigrationSubtasksRequest.Builder setParent(String value)

Required. The migration task of the subtasks to list.
Example: `projects/123/locations/us/workflows/1234`

`
string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://docs.oracle.com/javase/8/docs/api/java/lang/String.html` The parent to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setParentBytes(ByteString value)

    public ListMigrationSubtasksRequest.Builder setParentBytes(ByteString value)

Required. The migration task of the subtasks to list.
Example: `projects/123/locations/us/workflows/1234`

`
string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ByteString.html` The bytes for parent to set. |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` | This builder for chaining. |

### setReadMask(FieldMask value)

    public ListMigrationSubtasksRequest.Builder setReadMask(FieldMask value)

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `value` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMask.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |

### setReadMask(FieldMask.Builder builderForValue)

    public ListMigrationSubtasksRequest.Builder setReadMask(FieldMask.Builder builderForValue)

Optional. The list of fields to be retrieved.

`.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
`

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `builderForValue` | `https://cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.FieldMask.Builder.html` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/java/docs/reference/google-cloud-bigquerymigration/latest/com.google.cloud.bigquery.migration.v2.ListMigrationSubtasksRequest.Builder` |   |