public Builder clearGcsObjectName() {
      gcsObjectName_ = getDefaultInstance().getGcsObjectName();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
Required. The name of the GCS object to store the thumbnail image.
</pre>

<code>string gcs_object_name = 2 [(.google.api.field_behavior) = REQUIRED];</code>

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