@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, getReadMask());
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
Optional. Read mask is used for a more granular control over what the API
returns. If the mask is not present all fields will be returned except
[Queue.stats]. [Queue.stats] will be returned only if it was  explicitly
specified in the mask.
</pre>

<code>.google.protobuf.FieldMask read_mask = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/GetQueueRequest.java