code: @Override
      public DescribeInstancePatchStatesForPatchGroupResult describeInstancePatchStatesForPatchGroup(DescribeInstancePatchStatesForPatchGroupRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeInstancePatchStatesForPatchGroup(request);
      }
docs: <p>
  Retrieves the high-level patch state for the instances in the specified patch group.
  </p>
  
  @param describeInstancePatchStatesForPatchGroupRequest
  @return Result of the DescribeInstancePatchStatesForPatchGroup operation returned by the service.
  @throws InternalServerErrorException
  An error occurred on the server side.
  @throws InvalidFilterException
  The filter name is not valid. Verify the you entered the correct name and try again.
  @throws InvalidNextTokenException
  The specified token is not valid.
  @sample AWSSimpleSystemsManagement.DescribeInstancePatchStatesForPatchGroup
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ssm-2014-11-06/DescribeInstancePatchStatesForPatchGroup"
  target="_top">AWS API Documentation</a>