'Identifies whether the id provided is properly encoded
LibraryFolder.
:param  encoded_folder_id:  encoded id of Galaxy LibraryFolder
:type   encoded_folder_id:  encoded string
:returns:   encoded id of Folder (had \'F\' prepended)
:type:  string
:raises:    MalformedId'

def __decode_library_content_id(self, trans, encoded_folder_id):

    if (((len(encoded_folder_id) % 16) == 1) and encoded_folder_id.startswith('F')):
        return encoded_folder_id[1:]
    else:
        raise exceptions.MalformedId(('Malformed    folder    id    (    %s    )    specified,    unable    to    decode.' % str(encoded_folder_id)))
