private void ensureHelpLinksIsMutable() {
      if (!((bitField0_ & 0x00000008) != 0)) {
        helpLinks_ = new java.util.ArrayList<com.google.rpc.Help.Link>(helpLinks_);
        bitField0_ |= 0x00000008;
      }
    }
<pre>
Output only. Suggested action for solving the error.
</pre>

<code>
.google.rpc.LocalizedMessage action_item = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigrationError.java