public Builder clearAnnotations() {
      bitField0_ = (bitField0_ & ~0x00000010);
      internalGetMutableAnnotations().getMutableMap().clear();
      return this;
    }
<pre>
Optional. Client-specified annotations.
</pre>

<code>map&lt;string, string&gt; annotations = 5 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationCluster.java