@staticmethod<EOL><INDENT>def get_nameid(request, key=None):<DEDENT>
name_id = OneLogin_Saml2_Logout_Request.get_nameid_data(request, key)<EOL>return name_id['<STR_LIT>']<EOL>
Gets the NameID of the Logout Request Message
:param request: Logout Request Message
:type request: string|DOMDocument
:param key: The SP key
:type key: string
:return: Name ID Value
:rtype: string