def describe_signature(self, signode: TextElement, mode: str, env: 'BuildEnvironment', symbol: 'Symbol') -> None:
    signode.append(nodes.Text(self.op))
    if (self.op[0] in 'cn'):
        signode.append(nodes.Text(' '))
    self.expr.describe_signature(signode, mode, env, symbol)
def describe_signature(self, signode: TextElement, mode: str, env: 'BuildEnvironment', symbol: 'Symbol') -> None:
    signode.append(nodes.Text(self.op))
    if (self.op[0] in 'cn'):
        signode.append(nodes.Text(' '))
    self.expr.describe_signature(signode, mode, env, symbol)