@java.lang.Override
    public boolean hasUri() {
      return ((bitField0_ & 0x00000001) != 0);
    }
<pre>
URI reference of the attribution.
</pre>

<code>optional string uri = 1;</code>

@return Whether the uri field is set.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GroundingChunk.java