public Builder mergeGoogleAccount(
          com.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication.GoogleAccount
              value) {
        if (googleAccountBuilder_ == null) {
          if (authenticationCase_ == 1
              && authentication_
                  != com.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication
                      .GoogleAccount.getDefaultInstance()) {
            authentication_ =
                com.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication.GoogleAccount
                    .newBuilder(
                        (com.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication
                                .GoogleAccount)
                            authentication_)
                    .mergeFrom(value)
                    .buildPartial();
          } else {
            authentication_ = value;
          }
          onChanged();
        } else {
          if (authenticationCase_ == 1) {
            googleAccountBuilder_.mergeFrom(value);
          } else {
            googleAccountBuilder_.setMessage(value);
          }
        }
        authenticationCase_ = 1;
        return this;
      }
<pre>
Authentication using a Google account.
</pre>

<code>
.google.cloud.websecurityscanner.v1beta.ScanConfig.Authentication.GoogleAccount google_account = 1;
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfig.java