@java.lang.Override
    public boolean containsLabels(java.lang.String key) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      return internalGetLabels().getMap().containsKey(key);
    }
<pre>
Labels associated with this workflow.
Labels can contain at most 64 entries. Keys and values can be no longer
than 63 characters and can only contain lowercase letters, numeric
characters, underscores and dashes. Label keys must start with a letter.
International characters are allowed.
</pre>

<code>map&lt;string, string&gt; labels = 8;</code>
java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/Workflow.java