def list_fleets(BuildId=None, Limit=None, NextToken=None):
    """
    Retrieves a collection of fleet records for this AWS account. You can filter the result set by build ID. Use the pagination parameters to retrieve results in sequential pages.
    See also: AWS API Documentation
    
    
    :example: response = client.list_fleets(
        BuildId='string',
        Limit=123,
        NextToken='string'
    )
    
    
    :type BuildId: string
    :param BuildId: Unique identifier for a build to return fleets for. Use this parameter to return only fleets using the specified build. To retrieve all fleets, leave this parameter empty.

    :type Limit: integer
    :param Limit: Maximum number of results to return. Use this parameter with NextToken to get results as a set of sequential pages.

    :type NextToken: string
    :param NextToken: Token that indicates the start of the next sequential page of results. Use the token that is returned with a previous call to this action. To specify the start of the result set, do not specify a value.

    :rtype: dict
    :return: {
        'FleetIds': [
            'string',
        ],
        'NextToken': 'string'
    }
    
    
    :returns: 
    (string) --
    
    """
    pass
