public Builder clearFormat() {
      format_ = getDefaultInstance().getFormat();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
Format type. The default is `jpeg`.

Supported formats:

- `jpeg`
</pre>

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

@return This builder for chaining.
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/SpriteSheet.java