@java.lang.Override
      public int getSerializedSize() {
        int size = memoizedSize;
        if (size != -1) return size;

        size = 0;
        if (iapCredentialsCase_ == 1) {
          size +=
              com.google.protobuf.CodedOutputStream.computeMessageSize(
                  1,
                  (com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential
                          .IapTestServiceAccountInfo)
                      iapCredentials_);
        }
        size += getUnknownFields().getSerializedSize();
        memoizedSize = size;
        return size;
      }
<pre>
Authentication configuration when Web-Security-Scanner service
account is added in Identity-Aware-Proxy (IAP) access policies.
</pre>

<code>
.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential.IapTestServiceAccountInfo iap_test_service_account_info = 1;
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java