<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _close_tab(self):
 """ Create a new tab and close the old one to avoid idle page resource usage """

        old_tab = self.driver.current_window_handle
        self.driver.execute_script('''window.open("about:blank", "_blank");''')
        self.driver.switch_to.window(old_tab)
        self.driver.close()
        self.driver.switch_to.window(self.driver.window_handles[0])