public static com.google.cloud.vmmigration.v1.OperationMetadata getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
Output only. API version used to start the operation.
</pre>

<code>string api_version = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@param value The bytes for apiVersion to set.
@return This builder for chaining.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/OperationMetadata.java