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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_batch_runner(self):
 """Show the batch runner dialog."""

        from safe.gui.tools.batch.batch_dialog import BatchDialog

        dialog = BatchDialog(
            parent=self.iface.mainWindow(),
            iface=self.iface,
            dock=self.dock_widget)
        dialog.exec_()