Environment Argument

The EnvironmentArgument must be: overworld, the_nether or the_end. It returns an Environment enum. Example:

StellarCommand("isNether")
    .addDimensionArgument(name = "dimension")
    .addExecution<Player> {
        val environment = getArgument<Environment>("dimension")
        val isNether = environment == Environment.NETHER
        sender.sendMessage(isNether.toString())
    }