public Builder clearStateMessage() {
      stateMessage_ = getDefaultInstance().getStateMessage();
      bitField0_ = (bitField0_ & ~0x00000100);
      onChanged();
      return this;
    }
<pre>
Output only. A message providing possible extra details about the current
state.
</pre>

<code>string state_message = 10 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return This builder for chaining.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/CutoverJob.java