docs: public void marshall(GenerateDataKeyWithoutPlaintextRequest generateDataKeyWithoutPlaintextRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (generateDataKeyWithoutPlaintextRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(generateDataKeyWithoutPlaintextRequest.getKeyId(), KEYID_BINDING);
              protocolMarshaller.marshall(generateDataKeyWithoutPlaintextRequest.getEncryptionContext(), ENCRYPTIONCONTEXT_BINDING);
              protocolMarshaller.marshall(generateDataKeyWithoutPlaintextRequest.getKeySpec(), KEYSPEC_BINDING);
              protocolMarshaller.marshall(generateDataKeyWithoutPlaintextRequest.getNumberOfBytes(), NUMBEROFBYTES_BINDING);
              protocolMarshaller.marshall(generateDataKeyWithoutPlaintextRequest.getGrantTokens(), GRANTTOKENS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }