private void buildPartialOneofs(
          com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication result) {
        result.authenticationCase_ = authenticationCase_;
        result.authentication_ = this.authentication_;
        if (authenticationCase_ == 1 && googleAccountBuilder_ != null) {
          result.authentication_ = googleAccountBuilder_.build();
        }
        if (authenticationCase_ == 2 && customAccountBuilder_ != null) {
          result.authentication_ = customAccountBuilder_.build();
        }
        if (authenticationCase_ == 4 && iapCredentialBuilder_ != null) {
          result.authentication_ = iapCredentialBuilder_.build();
        }
      }
<pre>
Scan authentication configuration.
</pre>

Protobuf type {@code google.cloud.websecurityscanner.v1.ScanConfig.Authentication}
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java