val whitespace = "   "
        assertThat(
            parser.consumeFrom(input + whitespace + "something more"),
            equalTo(input)
        )

        assertThat(
            parser.consumeFrom(input + "\nsomething"),
            equalTo(input)
        )
    }
}


private
fun <T> Parser<T>.consumeFrom(input: String): String {
    val kotlinLexer = KotlinLexer()