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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_multi_buffer(self):
 """Show the multi buffer tool."""

        from safe.gui.tools.multi_buffer_dialog import (
            MultiBufferDialog)

        dialog = MultiBufferDialog(
            self.iface.mainWindow(), self.iface, self.dock_widget)
        dialog.exec_()