FILE: variables.kt
    public? final? fun foo(): R|kotlin/Unit| {
        lval x: <implicit> = IntegerLiteral(1)
        lvar y: <implicit> = x#.plus#(IntegerLiteral(1))
        lval z: <implicit> = y#.times#(IntegerLiteral(2))
        y# = y#.plus#(z#)
        lval w: <implicit> = y#.minus#(x#)
        ^foo w#
    }
