@java.lang.Override
  public java.lang.String getAdditionalInfoOrThrow(java.lang.String key) {
    if (key == null) {
      throw new NullPointerException("map key");
    }
    java.util.Map<java.lang.String, java.lang.String> map = internalGetAdditionalInfo().getMap();
    if (!map.containsKey(key)) {
      throw new java.lang.IllegalArgumentException();
    }
    return map.get(key);
  }
<pre>
Output only. Additional info related to the imported custom processor.
Data is filled in by app platform during the processor creation.
</pre>

<code>
map&lt;string, string&gt; additional_info = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CustomProcessorSourceInfo.java