code: @Override
      public DomainMetadataResult domainMetadata(DomainMetadataRequest request) {
          request = beforeClientExecution(request);
          return executeDomainMetadata(request);
      }
docs: <p>
  Returns information about the domain, including when the domain was created, the number of items and attributes
  in the domain, and the size of the attribute names and values.
  </p>
  
  @param domainMetadataRequest
  @return Result of the DomainMetadata operation returned by the service.
  @throws MissingParameterException
  The request must contain the specified missing parameter.
  @throws NoSuchDomainException
  The specified domain does not exist.
  @sample AmazonSimpleDB.DomainMetadata