code: @Override
      public GetDataSourceResult getDataSource(GetDataSourceRequest request) {
          request = beforeClientExecution(request);
          return executeGetDataSource(request);
      }
docs: <p>
  Returns a <code>DataSource</code> that includes metadata and data file information, as well as the current status
  of the <code>DataSource</code>.
  </p>
  <p>
  <code>GetDataSource</code> provides results in normal or verbose format. The verbose format adds the schema
  description and the list of files pointed to by the DataSource to the normal format.
  </p>
  
  @param getDataSourceRequest
  @return Result of the GetDataSource operation returned by the service.
  @throws InvalidInputException
  An error on the client occurred. Typically, the cause is an invalid input value.
  @throws ResourceNotFoundException
  A specified resource cannot be located.
  @throws InternalServerException
  An error on the server occurred when trying to process a request.
  @sample AmazonMachineLearning.GetDataSource