compiler/testData/cli/jvm/firLightTree.kt:2:5: error: variable expected.
    this += "Alpha"
    ^^^^
compiler/testData/cli/jvm/firLightTree.kt:3:15: error: classifier 'class System : Any' does not have a companion object, so it cannot be used as an expression.
    java.lang.System = null
              ^^^^^^
compiler/testData/cli/jvm/firLightTree.kt:3:15: error: variable expected.
    java.lang.System = null
              ^^^^^^
compiler/testData/cli/jvm/firLightTree.kt:3:24: error: null cannot be a value of a non-null type 'kotlin.Unit'.
    java.lang.System = null
                       ^^^^
COMPILATION_ERROR