@utils.check_messages("<STR_LIT>", "<STR_LIT>")<EOL><INDENT>def visit_raise(self, node):<DEDENT>
<EOL>if node.exc is None:<EOL><INDENT>return<EOL><DEDENT>expr = node.exc<EOL>if self._check_raise_value(node, expr):<EOL><INDENT>return<EOL><DEDENT>try:<EOL><INDENT>value = next(astroid.unpack_infer(expr))<EOL><DEDENT>except astroid.InferenceError:<EOL><INDENT>return<EOL><DEDENT>self._check_raise_value(node, value)<EOL>
Visit a raise statement and check for raising
        strings or old-raise-syntax.