FILE fqName:<root> fileName:/variableAsFunctionCall.kt
  FUN name:k visibility:public modality:FINAL <> ($receiver:kotlin.String) returnType:kotlin.Function0<kotlin.String>
    $receiver: VALUE_PARAMETER name:<this> type:kotlin.String
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='public final fun k (): kotlin.Function0<kotlin.String> declared in <root>'
        FUN_EXPR type=kotlin.Function0<kotlin.String> origin=LAMBDA
          FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.String
            BLOCK_BODY
              RETURN type=kotlin.Nothing from='local final fun <anonymous> (): kotlin.String declared in <root>.k'
                GET_VAR '<this>: kotlin.String declared in <root>.k' type=kotlin.String origin=null
  FUN name:test1 visibility:public modality:FINAL <> (f:kotlin.Function0<kotlin.Unit>) returnType:kotlin.Unit
    VALUE_PARAMETER name:f index:0 type:kotlin.Function0<kotlin.Unit>
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='public final fun test1 (f: kotlin.Function0<kotlin.Unit>): kotlin.Unit declared in <root>'
        CALL 'public abstract fun invoke (): R of kotlin.Function0 [operator] declared in kotlin.Function0' type=kotlin.Unit origin=INVOKE
          $this: GET_VAR 'f: kotlin.Function0<kotlin.Unit> declared in <root>.test1' type=kotlin.Function0<kotlin.Unit> origin=VARIABLE_AS_FUNCTION
  FUN name:test2 visibility:public modality:FINAL <> (f:@[ExtensionFunctionType] kotlin.Function1<kotlin.String, kotlin.Unit>) returnType:kotlin.Unit
    VALUE_PARAMETER name:f index:0 type:@[ExtensionFunctionType] kotlin.Function1<kotlin.String, kotlin.Unit>
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='public final fun test2 (f: @[ExtensionFunctionType] kotlin.Function1<kotlin.String, kotlin.Unit>): kotlin.Unit declared in <root>'
        CALL 'public abstract fun invoke (p1: P1 of kotlin.Function1): R of kotlin.Function1 [operator] declared in kotlin.Function1' type=kotlin.Unit origin=INVOKE
          $this: GET_VAR 'f: @[ExtensionFunctionType] kotlin.Function1<kotlin.String, kotlin.Unit> declared in <root>.test2' type=@[ExtensionFunctionType] kotlin.Function1<kotlin.String, kotlin.Unit> origin=VARIABLE_AS_FUNCTION
          p1: CONST String type=kotlin.String value="hello"
  FUN name:test3 visibility:public modality:FINAL <> () returnType:kotlin.String
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='public final fun test3 (): kotlin.String declared in <root>'
        CALL 'public abstract fun invoke (): R of kotlin.Function0 [operator] declared in kotlin.Function0' type=kotlin.String origin=null
          $this: CALL 'public final fun k (): kotlin.Function0<kotlin.String> declared in <root>' type=kotlin.Function0<kotlin.String> origin=null
            $receiver: CONST String type=kotlin.String value="hello"
  FUN name:test4 visibility:public modality:FINAL <> (ns:kotlin.String?) returnType:kotlin.String?
    VALUE_PARAMETER name:ns index:0 type:kotlin.String?
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='public final fun test4 (ns: kotlin.String?): kotlin.String? declared in <root>'
        BLOCK type=kotlin.String? origin=SAFE_CALL
          VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:kotlin.Function0<kotlin.String>? [val]
            BLOCK type=kotlin.Function0<kotlin.String>? origin=SAFE_CALL
              VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:kotlin.String? [val]
                GET_VAR 'ns: kotlin.String? declared in <root>.test4' type=kotlin.String? origin=null
              WHEN type=kotlin.Function0<kotlin.String>? origin=null
                BRANCH
                  if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
                    arg0: GET_VAR 'val tmp_1: kotlin.String? [val] declared in <root>.test4' type=kotlin.String? origin=null
                    arg1: CONST Null type=kotlin.Nothing? value=null
                  then: CONST Null type=kotlin.Nothing? value=null
                BRANCH
                  if: CONST Boolean type=kotlin.Boolean value=true
                  then: CALL 'public final fun k (): kotlin.Function0<kotlin.String> declared in <root>' type=kotlin.Function0<kotlin.String> origin=null
                    $receiver: GET_VAR 'val tmp_1: kotlin.String? [val] declared in <root>.test4' type=kotlin.String? origin=null
          WHEN type=kotlin.String? origin=null
            BRANCH
              if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
                arg0: GET_VAR 'val tmp_0: kotlin.Function0<kotlin.String>? [val] declared in <root>.test4' type=kotlin.Function0<kotlin.String>? origin=null
                arg1: CONST Null type=kotlin.Nothing? value=null
              then: CONST Null type=kotlin.Nothing? value=null
            BRANCH
              if: CONST Boolean type=kotlin.Boolean value=true
              then: CALL 'public abstract fun invoke (): R of kotlin.Function0 [operator] declared in kotlin.Function0' type=kotlin.String origin=null
                $this: GET_VAR 'val tmp_0: kotlin.Function0<kotlin.String>? [val] declared in <root>.test4' type=kotlin.Function0<kotlin.String>? origin=null