human
Solve the following python programming problem given the following code:
def async_call(self, fn, * args, **kwargs) : 
    "Schedule `fn` to be called by the event loop soon.

        This function is thread-safe, and is the only way code not
        on the main thread could interact with nvim api objects.

        This function can also be called in a synchronous
        event handler, just before it returns, to defer execution
        that shouldn't block neovim.
        " 
    call_point = ''.join (format_stack (None, 5) [: (- 1)]) 
    def handler() : 
        try : 
            fn (* args, ** kwargs) 
except Exception as err : 
            msg = 'error caught while executing async callback:
{0!r}
{1}
 
the call was requested at
{2}'.format (err, format_exc (5), call_point) 
            self._err_cb (msg) 
            raise 
self._session.threadsafe_call (call_point) 

    
    

    Fix the buggy line: self._session.threadsafe_call (call_point)
assistant
#Here is Python program to fix the buggy line: self.

self._session.threadsafe_call (def handler()