@java.lang.Override
    public java.lang.String getAnnotationsOrThrow(java.lang.String key) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      java.util.Map<java.lang.String, java.lang.String> map = internalGetAnnotations().getMap();
      if (!map.containsKey(key)) {
        throw new java.lang.IllegalArgumentException();
      }
      return map.get(key);
    }
<pre>
Annotations to allow clients to store small amounts of arbitrary data.
</pre>

<code>map&lt;string, string&gt; annotations = 5;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Event.java