public Builder mergeThreatConfidence(com.google.webrisk.v1.ThreatInfo.Confidence value) {
      if (threatConfidenceBuilder_ == null) {
        if (((bitField0_ & 0x00000002) != 0)
            && threatConfidence_ != null
            && threatConfidence_
                != com.google.webrisk.v1.ThreatInfo.Confidence.getDefaultInstance()) {
          getThreatConfidenceBuilder().mergeFrom(value);
        } else {
          threatConfidence_ = value;
        }
      } else {
        threatConfidenceBuilder_.mergeFrom(value);
      }
      if (threatConfidence_ != null) {
        bitField0_ |= 0x00000002;
        onChanged();
      }
      return this;
    }
<pre>
Confidence that the URI is unsafe.
</pre>

<code>.google.cloud.webrisk.v1.ThreatInfo.Confidence threat_confidence = 2;</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ThreatInfo.java