public Builder clearPlatform() {
      bitField0_ = (bitField0_ & ~0x00000001);
      platform_ = 0;
      onChanged();
      return this;
    }
<pre>
Platform on which the threat was discovered.
</pre>

<code>.google.cloud.webrisk.v1.ThreatDiscovery.Platform platform = 1;</code>

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