human
Solve the following python programming problem given the following code:
def _set_position_func(self, func) : 
    "The position callback function. The position callback function 
        is called each time step and can be used to update the body's position.
        
            ``func(body, dt) -> None``
            
            Callback Parameters
                body : `Body`
                    Body that should have its velocity calculated
                dt : float
                    Delta time since last step.
        " 
    def _impl(_, dt) : 
        func (self, dt) 
        return 0 
self._position_callback = cp.cpBodyPositionFunc (_impl) 
    self._bodycontents.position_func = func._position_callback 

    
    

    Fix the buggy line: self._bodycontents.position_func = func._position_callback
assistant
#Here is Python code to fix the buggy line: self.

self._bodycontents.position_func = self._position_callback