This is an extra additional update for the /itemdrops command because some people might not know how to turn on the command because most people don't bother reading the instructions.
This is where a tab completer gets introduced so they can just do /itemdrops and Minecraft displays a list of parameters (on | off | true | false) that people can use.
Note that this is JRE 8 because I realized that JRE 9 was a bit less popular