Key sequence passed as the key argument to Interface.write.
key
Interface.write
See also:
https://nodejs.org/api/readline.html#readline_rl_write_data_key
@:optionaloptionalshift:Null<Bool>
true to indicate the key.
true
name:String
The name of the a key.
@:optionaloptionalmeta:Null<Bool>
@:optionaloptionalctrl:Null<Bool>