public Builder clearSamplingRate() {
      bitField0_ = (bitField0_ & ~0x00000002);
      samplingRate_ = 0D;
      onChanged();
      return this;
    }
<pre>
Percentage of requests to be logged, expressed as a fraction in
range(0,1].
</pre>

<code>double sampling_rate = 2;</code>

@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/PredictRequestResponseLoggingConfig.java