<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def decodes(self, s: str) -> BioCCollection: """ Deserialize ``s`` to a BioC collection object. Args: s: a "str" instance containing a BioC collection Returns: an object of BioCollection """

        tree = etree.parse(io.BytesIO(bytes(s, encoding='UTF-8')))
        collection = self.__parse_collection(tree.getroot())
        collection.encoding = tree.docinfo.encoding
        collection.standalone = tree.docinfo.standalone
        collection.version = tree.docinfo.xml_version
        return collection