def refresh_cache(FileShareARN=None):
    """
    Refreshes the cache for the specified file share. This operation finds objects in the Amazon S3 bucket that were added or removed since the gateway last listed the bucket's contents and cached the results.
    See also: AWS API Documentation
    
    
    :example: response = client.refresh_cache(
        FileShareARN='string'
    )
    
    
    :type FileShareARN: string
    :param FileShareARN: [REQUIRED]
            The Amazon Resource Name (ARN) of the file share.
            

    :rtype: dict
    :return: {
        'FileShareARN': 'string'
    }
    
    
    """
    pass
