public java.lang.String getEntityId() {
      java.lang.Object ref = entityId_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        entityId_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
Opaque entity ID. Some IDs may be available in
[Google Knowledge Graph Search
API](https://developers.google.com/knowledge-graph/).
</pre>

<code>string entity_id = 1;</code>

@return The entityId.
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/Entity.java