code: @Override
      public CreateDocumentClassifierResult createDocumentClassifier(CreateDocumentClassifierRequest request) {
          request = beforeClientExecution(request);
          return executeCreateDocumentClassifier(request);
      }
docs: <p>
  Creates a new document classifier that you can use to categorize documents. To create a classifier you provide a
  set of training documents that labeled with the categories that you want to use. After the classifier is trained
  you can use it to categorize a set of labeled documents into the categories. For more information, see
  <a>how-document-classification</a>.
  </p>
  
  @param createDocumentClassifierRequest
  @return Result of the CreateDocumentClassifier operation returned by the service.
  @throws InvalidRequestException
  The request is invalid.
  @throws ResourceInUseException
  The specified name is already in use. Use a different name and try your request again.
  @throws TooManyTagsException
  The request contains more tags than can be associated with a resource (50 tags per resource). The maximum
  number of tags includes both existing tags and those included in your current request.
  @throws TooManyRequestsException
  The number of requests exceeds the limit. Resubmit your request later.
  @throws ResourceLimitExceededException
  The maximum number of recognizers per account has been exceeded. Review the recognizers, perform cleanup,
  and then try your request again.
  @throws UnsupportedLanguageException
  Amazon Comprehend can't process the language of the input text. For all custom entity recognition APIs
  (such as <code>CreateEntityRecognizer</code>), only English is accepted. For most other APIs, Amazon
  Comprehend accepts only English or Spanish text.
  @throws KmsKeyValidationException
  The KMS customer managed key (CMK) entered cannot be validated. Verify the key and re-enter it.
  @throws InternalServerException
  An internal server error occurred. Retry your request.
  @sample AmazonComprehend.CreateDocumentClassifier
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/comprehend-2017-11-27/CreateDocumentClassifier"
  target="_top">AWS API Documentation</a>