public Builder clearAuthentication() {
      bitField0_ = (bitField0_ & ~0x00000010);
      authentication_ = null;
      if (authenticationBuilder_ != null) {
        authenticationBuilder_.dispose();
        authenticationBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The authentication configuration. If specified, service will use the
authentication configuration during scanning.
</pre>

<code>.google.cloud.websecurityscanner.v1.ScanConfig.Authentication authentication = 5;
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java