public Builder setAuthentication(
        com.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication.Builder
            builderForValue) {
      if (authenticationBuilder_ == null) {
        authentication_ = builderForValue.build();
      } else {
        authenticationBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
<pre>
The authentication configuration. If specified, service will use the
authentication configuration during scanning.
</pre>

<code>.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication authentication = 5;
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfig.java