code: @Override
      public UpdateDocumentDefaultVersionResult updateDocumentDefaultVersion(UpdateDocumentDefaultVersionRequest request) {
          request = beforeClientExecution(request);
          return executeUpdateDocumentDefaultVersion(request);
      }
docs: <p>
  Set the default version of a document.
  </p>
  
  @param updateDocumentDefaultVersionRequest
  @return Result of the UpdateDocumentDefaultVersion operation returned by the service.
  @throws InternalServerErrorException
  An error occurred on the server side.
  @throws InvalidDocumentException
  The specified document does not exist.
  @throws InvalidDocumentVersionException
  The document version is not valid or does not exist.
  @throws InvalidDocumentSchemaVersionException
  The version of the document schema is not supported.
  @sample AWSSimpleSystemsManagement.UpdateDocumentDefaultVersion
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ssm-2014-11-06/UpdateDocumentDefaultVersion"
  target="_top">AWS API Documentation</a>