public Builder clearRadiusMeter() {
      bitField0_ = (bitField0_ & ~0x00000004);
      radiusMeter_ = 0D;
      onChanged();
      return this;
    }
<pre>
Radius of the circle area in meters.
</pre>

<code>double radius_meter = 3;</code>

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