@staticmethod<EOL><INDENT>def get_issuer(request):<DEDENT>
elem = OneLogin_Saml2_XML.to_etree(request)<EOL>issuer = None<EOL>issuer_nodes = OneLogin_Saml2_XML.query(elem, '<STR_LIT>')<EOL>if len(issuer_nodes) == <NUM_LIT:1>:<EOL><INDENT>issuer = OneLogin_Saml2_XML.element_text(issuer_nodes[<NUM_LIT:0>])<EOL><DEDENT>return issuer<EOL>
Gets the Issuer of the Logout Request Message
:param request: Logout Request Message
:type request: string|DOMDocument
:return: The Issuer
:rtype: string