Parameters

    // This is a required parameter
    @Parameters(index = "0", description = ["The lookup query"])
    lateinit var query: String

    // This is an optional parameter
    @Parameters(index = "0", arity = "0..1", description = ["The optional lookup query"])
    var query2: String? = null

Notes

• The arity attribute specifies the number of arguments that the parameter can take. For an optional parameter, you can set arity = "0..1", which means the parameter can take either 0 or 1 argument.