def get_default_adapter(self):
adapters = self.list_adapters()<EOL>if len(adapters) > <NUM_LIT:0>:<EOL><INDENT>return adapters[<NUM_LIT:0>]<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>
Return the first BLE adapter found, or None if no adapters are
        available.