code: @Override
      public ListManagedSchemaArnsResult listManagedSchemaArns(ListManagedSchemaArnsRequest request) {
          request = beforeClientExecution(request);
          return executeListManagedSchemaArns(request);
      }
docs: <p>
  Lists the major version families of each managed schema. If a major version ARN is provided as SchemaArn, the
  minor version revisions in that family are listed instead.
  </p>
  
  @param listManagedSchemaArnsRequest
  @return Result of the ListManagedSchemaArns operation returned by the service.
  @throws InternalServiceException
  Indicates a problem that must be resolved by Amazon Web Services. This might be a transient error in
  which case you can retry your request until it succeeds. Otherwise, go to the <a
  href="http://status.aws.amazon.com/">AWS Service Health Dashboard</a> site to see if there are any
  operational issues with the service.
  @throws InvalidArnException
  Indicates that the provided ARN value is not valid.
  @throws ValidationException
  Indicates that your request is malformed in some manner. See the exception message.
  @throws AccessDeniedException
  Access denied. Check your permissions.
  @throws ResourceNotFoundException
  The specified resource could not be found.
  @throws InvalidNextTokenException
  Indicates that the <code>NextToken</code> value is not valid.
  @sample AmazonCloudDirectory.ListManagedSchemaArns
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/clouddirectory-2017-01-11/ListManagedSchemaArns"
  target="_top">AWS API Documentation</a>