public Builder clearFacetId() {
      facetId_ = getDefaultInstance().getFacetId();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
Unique id of the facet group.
</pre>

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

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetGroup.java