public Builder clearRecognitionConfidenceThreshold() {
      bitField0_ = (bitField0_ & ~0x00000002);
      recognitionConfidenceThreshold_ = 0F;
      onChanged();
      return this;
    }
<pre>
Confidence threshold to filter detection results. If not set, a system
default value will be used.
</pre>

<code>float recognition_confidence_threshold = 2;</code>

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