def describe_job_definitions(jobDefinitions=None, maxResults=None,
    jobDefinitionName=None, status=None, nextToken=None):
    """
    Describes a list of job definitions. You can specify a status (such as ACTIVE ) to only return job definitions that match that status.
    See also: AWS API Documentation
    
    Examples
    This example describes all of your active job definitions.
    Expected Output:
    
    :example: response = client.describe_job_definitions(
        jobDefinitions=[
            'string',
        ],
        maxResults=123,
        jobDefinitionName='string',
        status='string',
        nextToken='string'
    )
    
    
    :type jobDefinitions: list
    :param jobDefinitions: A space-separated list of up to 100 job definition names or full Amazon Resource Name (ARN) entries.
            (string) --
            

    :type maxResults: integer
    :param maxResults: The maximum number of results returned by DescribeJobDefinitions in paginated output. When this parameter is used, DescribeJobDefinitions only returns maxResults results in a single page along with a nextToken response element. The remaining results of the initial request can be seen by sending another DescribeJobDefinitions request with the returned nextToken value. This value can be between 1 and 100. If this parameter is not used, then DescribeJobDefinitions returns up to 100 results and a nextToken value if applicable.

    :type jobDefinitionName: string
    :param jobDefinitionName: The name of the job definition to describe.

    :type status: string
    :param status: The status with which to filter job definitions.

    :type nextToken: string
    :param nextToken: The nextToken value returned from a previous paginated DescribeJobDefinitions request where maxResults was used and the results exceeded the value of that parameter. Pagination continues from the end of the previous results that returned the nextToken value. This value is null when there are no more results to return.
            Note
            This token should be treated as an opaque identifier that is only used to retrieve the next items in a list and not for other programmatic purposes.
            

    :rtype: dict
    :return: {
        'jobDefinitions': [
            {
                'jobDefinitionName': 'string',
                'jobDefinitionArn': 'string',
                'revision': 123,
                'status': 'string',
                'type': 'string',
                'parameters': {
                    'string': 'string'
                },
                'retryStrategy': {
                    'attempts': 123
                },
                'containerProperties': {
                    'image': 'string',
                    'vcpus': 123,
                    'memory': 123,
                    'command': [
                        'string',
                    ],
                    'jobRoleArn': 'string',
                    'volumes': [
                        {
                            'host': {
                                'sourcePath': 'string'
                            },
                            'name': 'string'
                        },
                    ],
                    'environment': [
                        {
                            'name': 'string',
                            'value': 'string'
                        },
                    ],
                    'mountPoints': [
                        {
                            'containerPath': 'string',
                            'readOnly': True|False,
                            'sourceVolume': 'string'
                        },
                    ],
                    'readonlyRootFilesystem': True|False,
                    'privileged': True|False,
                    'ulimits': [
                        {
                            'hardLimit': 123,
                            'name': 'string',
                            'softLimit': 123
                        },
                    ],
                    'user': 'string'
                }
            },
        ],
        'nextToken': 'string'
    }
    
    
    :returns: 
    (string) --
    (string) --
    
    
    
    """
    pass
