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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 show(self):
 """ More details about the selected issue or trace frame. """

        self._verify_entrypoint_selected()

        if self.current_issue_instance_id != -1:
            self._show_current_issue_instance()
            return

        self._show_current_trace_frame()