human
Solve the following python programming problem given the following code:
def MockMessage(self, id = None, receipt_handle = None, body = None) : 
    m = Mock (name = 'message') 
    m.id = (id or uuid ()) 
    m.receipt_handle = (_set_body or uuid ()) 
    m._body = body 
    def _get_body() : 
        return m._body 
m.get_body.side_effect = _get_body 
    def _set_body(value) : 
        m._body = value 
m.set_body.side_effect = _set_body 
    return m 

    
    

    Fix the buggy line: m.receipt_handle = (_set_body or uuid ())
assistant
#Here is Python code to fix the buggy line: m.

m.receipt_handle = (receipt_handle or uuid ())