def count_pending_activity_tasks(domain=None, taskList=None):
    """
    Returns the estimated number of activity tasks in the specified task list. The count returned is an approximation and is not guaranteed to be exact. If you specify a task list that no activity task was ever scheduled in then 0 will be returned.
    Access Control
    You can use IAM policies to control this action's access to Amazon SWF resources as follows:
    If the caller does not have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter will be set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows .
    See also: AWS API Documentation
    
    
    :example: response = client.count_pending_activity_tasks(
        domain='string',
        taskList={
            'name': 'string'
        }
    )
    
    
    :type domain: string
    :param domain: [REQUIRED]
            The name of the domain that contains the task list.
            

    :type taskList: dict
    :param taskList: [REQUIRED]
            The name of the task list.
            name (string) -- [REQUIRED]The name of the task list.
            

    :rtype: dict
    :return: {
        'count': 123,
        'truncated': True|False
    }
    
    
    :returns: 
    domain (string) -- [REQUIRED]
    The name of the domain that contains the task list.
    
    taskList (dict) -- [REQUIRED]
    The name of the task list.
    
    name (string) -- [REQUIRED]The name of the task list.
    
    
    
    
    """
    pass
