human
Solve the following python programming problem given the following code:
@ property 
def long_click(self) : 
    '
        Perform a long click action on the object.
        Usage:
        d(text="Image").long_click()  # long click on the center of the ui object
        d(text="Image").long_click.topleft()  # long click on the topleft of the ui object
        d(text="Image").long_click.bottomright()  # long click on the topleft of the ui object
        ' 
    @ param_to_property (corner = ['tl', 'topleft', 'br', 'bottomright']) 
    def _long_click(corner = None) : 
        info = self.info 
        if info ['longClickable'] : 
            if corner : 
                return self.jsonrpc.longClick (self.selector, corner) 
else : 
                return self.jsonrpc.longClick (self.selector) 
else : 
            bounds = (info.get ('visibleBounds') or info.get ('bounds')) 
            if (corner in ['tl', 'topleft']) : 
                x = (((5 * bounds ['left']) + bounds ['right']) / 6) 
                y = (((5 * bounds ['top']) + bounds ['bottom']) / 6) 
else : 
                if (corner in ['br', 'bottomright']) : 
                    x = ((bounds ['left'] + (5 * bounds ['right'])) / 6) 
                    y = ((bounds ['top'] + (5 * bounds ['bottom'])) / 6) 
else : 
                    x = ((bounds ['left'] + bounds ['right']) / 2) 
                    y = ((bounds ['top'] + bounds ['bottom']) / 2) 
return self.device.long_click (x, y) 
return self 

    
    

    Fix the buggy line: return self
assistant
#Here is Python program to fix the buggy line: return self
.

return def _long_click(