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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def refresh(self, *args, **kwargs):
 """Refresh the model :returns: None :rtype: None :raises: None """

        self.prjbrws.set_model(self.create_prj_model())
        if self.get_current_file():
            self.set_to_current()
        else:
            self.init_selection()