@staticmethod<EOL><INDENT>def get_id(request):<DEDENT>
elem = OneLogin_Saml2_XML.to_etree(request)<EOL>return elem.get('<STR_LIT>', None)<EOL>
Returns the ID of the Logout Request
:param request: Logout Request Message
:type request: string|DOMDocument
:return: string ID
:rtype: str object