def describe_objects(pipelineId=None, objectIds=None, evaluateExpressions=
    None, marker=None):
    """
    Gets the object definitions for a set of objects associated with the pipeline. Object definitions are composed of a set of fields that define the properties of the object.
    See also: AWS API Documentation
    
    
    :example: response = client.describe_objects(
        pipelineId='string',
        objectIds=[
            'string',
        ],
        evaluateExpressions=True|False,
        marker='string'
    )
    
    
    :type pipelineId: string
    :param pipelineId: [REQUIRED]
            The ID of the pipeline that contains the object definitions.
            

    :type objectIds: list
    :param objectIds: [REQUIRED]
            The IDs of the pipeline objects that contain the definitions to be described. You can pass as many as 25 identifiers in a single call to DescribeObjects .
            (string) --
            

    :type evaluateExpressions: boolean
    :param evaluateExpressions: Indicates whether any expressions in the object should be evaluated when the object descriptions are returned.

    :type marker: string
    :param marker: The starting point for the results to be returned. For the first call, this value should be empty. As long as there are more results, continue to call DescribeObjects with the marker value from the previous call to retrieve the next set of results.

    :rtype: dict
    :return: {
        'pipelineObjects': [
            {
                'id': 'string',
                'name': 'string',
                'fields': [
                    {
                        'key': 'string',
                        'stringValue': 'string',
                        'refValue': 'string'
                    },
                ]
            },
        ],
        'marker': 'string',
        'hasMoreResults': True|False
    }
    
    
    """
    pass
