public Builder clearTargetPlatforms() {
      targetPlatforms_ = java.util.Collections.emptyList();
      bitField0_ = (bitField0_ & ~0x00000100);
      onChanged();
      return this;
    }
<pre>
Set of Cloud Platforms targeted by the scan. If empty, APP_ENGINE will be
used as a default.
</pre>

<code>
repeated .google.cloud.websecurityscanner.v1alpha.ScanConfig.TargetPlatform target_platforms = 9;
</code>

@return This builder for chaining.
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/ScanConfig.java