public Builder clearFinishMessage() {
      finishMessage_ = getDefaultInstance().getFinishMessage();
      bitField0_ = (bitField0_ & ~0x00000080);
      onChanged();
      return this;
    }
<pre>
Output only. Describes the reason the mode stopped generating tokens in
more detail. This is only filled when `finish_reason` is set.
</pre>

<code>optional string finish_message = 5 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Candidate.java