def check_one_condition(self):
condition_nodes = self.__query_assertion('<STR_LIT>')<EOL>if len(condition_nodes) == <NUM_LIT:1>:<EOL><INDENT>return True<EOL><DEDENT>else:<EOL><INDENT>return False<EOL><DEDENT>
Checks that the samlp:Response/saml:Assertion/saml:Conditions element exists and is unique.