private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.DataSchema,
            com.google.cloud.visionai.v1.DataSchema.Builder,
            com.google.cloud.visionai.v1.DataSchemaOrBuilder>
        getDataSchemaFieldBuilder() {
      if (dataSchemaBuilder_ == null) {
        dataSchemaBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.DataSchema,
                com.google.cloud.visionai.v1.DataSchema.Builder,
                com.google.cloud.visionai.v1.DataSchemaOrBuilder>(
                getDataSchema(), getParentForChildren(), isClean());
        dataSchema_ = null;
      }
      return dataSchemaBuilder_;
    }
<pre>
Required. The data schema's `name` field is used to identify the data
schema to be updated. Format:
`projects/{project_number}/locations/{location}/corpora/{corpus}/dataSchemas/{data_schema}`
</pre>

<code>
.google.cloud.visionai.v1.DataSchema data_schema = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/UpdateDataSchemaRequest.java