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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 create_jlink(self, args):
 """Creates an instance of a J-Link from the given arguments. Args: self (Command):
 the ``Command`` instance args (Namespace):
 arguments to construct the ``JLink`` instance from Returns: An instance of a ``JLink``. """

        jlink = pylink.JLink()
        jlink.open(args.serial_no, args.ip_addr)

        if hasattr(args, 'tif') and args.tif is not None:
            if args.tif.lower() == 'swd':
                jlink.set_tif(pylink.JLinkInterfaces.SWD)
            else:
                jlink.set_tif(pylink.JLinkInterfaces.JTAG)

        if hasattr(args, 'device') and args.device is not None:
            jlink.connect(args.device)

        return jlink