public Builder clearUserAgent() {
      bitField0_ = (bitField0_ & ~0x00000020);
      userAgent_ = 0;
      onChanged();
      return this;
    }
<pre>
The user agent used during scanning.
</pre>

<code>.google.cloud.websecurityscanner.v1alpha.ScanConfig.UserAgent user_agent = 6;</code>

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