def get_account_settings():
    """
    Returns a customer's account settings.
    You can use this operation to retrieve Lambda limits information, such as code size and concurrency limits. For more information about limits, see AWS Lambda Limits . You can also retrieve resource usage statistics, such as code storage usage and function count.
    See also: AWS API Documentation
    
    Examples
    This operation retrieves a Lambda customer's account settings
    Expected Output:
    
    :example: response = client.get_account_settings()
    
    
    :rtype: dict
    :return: {
        'AccountLimit': {
            'TotalCodeSize': 123,
            'CodeSizeUnzipped': 123,
            'CodeSizeZipped': 123,
            'ConcurrentExecutions': 123
        },
        'AccountUsage': {
            'TotalCodeSize': 123,
            'FunctionCount': 123
        }
    }
    
    
    """
    pass
