FILE fqName:<root> fileName:/variableAsFunctionCall.kt
  FUN name:k visibility:public modality:FINAL <> ($receiver:kotlin.String) returnType:kotlin.Function0<kotlin.String> flags:[]
    $receiver: VALUE_PARAMETER name:<this> type:kotlin.String flags:[]
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='FUN name:k visibility:public modality:FINAL <> ($receiver:kotlin.String) returnType:kotlin.Function0<kotlin.String> flags:[]'
        BLOCK type=kotlin.Function0<kotlin.String> origin=LAMBDA
          FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.String flags:[]
            BLOCK_BODY
              RETURN type=kotlin.Nothing from='FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.String flags:[]'
                GET_VAR 'VALUE_PARAMETER name:<this> type:kotlin.String flags:[]' type=kotlin.String origin=null
          FUNCTION_REFERENCE 'FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.String flags:[]' type=kotlin.Function0<kotlin.String> origin=LAMBDA
  FUN name:test1 visibility:public modality:FINAL <> (f:kotlin.Function0<kotlin.Unit>) returnType:kotlin.Unit flags:[]
    VALUE_PARAMETER name:f index:0 type:kotlin.Function0<kotlin.Unit> flags:[]
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='FUN name:test1 visibility:public modality:FINAL <> (f:kotlin.Function0<kotlin.Unit>) returnType:kotlin.Unit flags:[]'
        CALL 'FUN IR_EXTERNAL_DECLARATION_STUB name:invoke visibility:public modality:ABSTRACT <> ($this:kotlin.Function0<kotlin.Function0.R>) returnType:kotlin.Function0.R flags:[]' type=kotlin.Unit origin=INVOKE
          $this: GET_VAR 'VALUE_PARAMETER name:f index:0 type:kotlin.Function0<kotlin.Unit> flags:[]' type=kotlin.Function0<kotlin.Unit> origin=VARIABLE_AS_FUNCTION
  FUN name:test2 visibility:public modality:FINAL <> (f:@[CALL 'CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:kotlin.ExtensionFunctionType flags:[primary]' type=kotlin.ExtensionFunctionType origin=null] kotlin.Function1<kotlin.String, kotlin.Unit>) returnType:kotlin.Unit flags:[]
    VALUE_PARAMETER name:f index:0 type:@[CALL 'CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:kotlin.ExtensionFunctionType flags:[primary]' type=kotlin.ExtensionFunctionType origin=null] kotlin.Function1<kotlin.String, kotlin.Unit> flags:[]
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='FUN name:test2 visibility:public modality:FINAL <> (f:@[CALL 'CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:kotlin.ExtensionFunctionType flags:[primary]' type=kotlin.ExtensionFunctionType origin=null] kotlin.Function1<kotlin.String, kotlin.Unit>) returnType:kotlin.Unit flags:[]'
        CALL 'FUN IR_EXTERNAL_DECLARATION_STUB name:invoke visibility:public modality:ABSTRACT <> ($this:kotlin.Function1<kotlin.Function1.P1, kotlin.Function1.R>, p1:kotlin.Function1.P1) returnType:kotlin.Function1.R flags:[]' type=kotlin.Unit origin=INVOKE
          $this: GET_VAR 'VALUE_PARAMETER name:f index:0 type:@[CALL 'CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:kotlin.ExtensionFunctionType flags:[primary]' type=kotlin.ExtensionFunctionType origin=null] kotlin.Function1<kotlin.String, kotlin.Unit> flags:[]' type=@[CALL 'CONSTRUCTOR IR_EXTERNAL_DECLARATION_STUB visibility:public <> () returnType:kotlin.ExtensionFunctionType flags:[primary]' type=kotlin.ExtensionFunctionType origin=null] kotlin.Function1<kotlin.String, kotlin.Unit> origin=VARIABLE_AS_FUNCTION
          p1: CONST String type=kotlin.String value="hello"
  FUN name:test3 visibility:public modality:FINAL <> () returnType:kotlin.String flags:[]
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='FUN name:test3 visibility:public modality:FINAL <> () returnType:kotlin.String flags:[]'
        CALL 'FUN IR_EXTERNAL_DECLARATION_STUB name:invoke visibility:public modality:ABSTRACT <> ($this:kotlin.Function0<kotlin.Function0.R>) returnType:kotlin.Function0.R flags:[]' type=kotlin.String origin=null
          $this: CALL 'FUN name:k visibility:public modality:FINAL <> ($receiver:kotlin.String) returnType:kotlin.Function0<kotlin.String> flags:[]' type=kotlin.Function0<kotlin.String> origin=null
            $receiver: CONST String type=kotlin.String value="hello"
  FUN name:test4 visibility:public modality:FINAL <> (ns:kotlin.String?) returnType:kotlin.String? flags:[]
    VALUE_PARAMETER name:ns index:0 type:kotlin.String? flags:[]
    BLOCK_BODY
      RETURN type=kotlin.Nothing from='FUN name:test4 visibility:public modality:FINAL <> (ns:kotlin.String?) returnType:kotlin.String? flags:[]'
        BLOCK type=kotlin.String? origin=SAFE_CALL
          VAR IR_TEMPORARY_VARIABLE name:tmp1_safe_receiver type:kotlin.Function0<kotlin.String>? flags:[val]
            BLOCK type=kotlin.Function0<kotlin.String>? origin=SAFE_CALL
              VAR IR_TEMPORARY_VARIABLE name:tmp0_safe_receiver type:kotlin.String? flags:[val]
                GET_VAR 'VALUE_PARAMETER name:ns index:0 type:kotlin.String? flags:[]' type=kotlin.String? origin=null
              WHEN type=kotlin.Function0<kotlin.String>? origin=null
                BRANCH
                  if: CALL 'FUN IR_BUILTINS_STUB name:EQEQ visibility:public modality:FINAL <> (arg0:kotlin.Any?, arg1:kotlin.Any?) returnType:kotlin.Boolean flags:[]' type=kotlin.Boolean origin=EQEQ
                    arg0: GET_VAR 'VAR IR_TEMPORARY_VARIABLE name:tmp0_safe_receiver type:kotlin.String? flags:[val]' type=kotlin.String? origin=null
                    arg1: CONST Null type=kotlin.Nothing? value=null
                  then: CONST Null type=kotlin.Nothing? value=null
                BRANCH
                  if: CONST Boolean type=kotlin.Boolean value=true
                  then: CALL 'FUN name:k visibility:public modality:FINAL <> ($receiver:kotlin.String) returnType:kotlin.Function0<kotlin.String> flags:[]' type=kotlin.Function0<kotlin.String> origin=null
                    $receiver: GET_VAR 'VAR IR_TEMPORARY_VARIABLE name:tmp0_safe_receiver type:kotlin.String? flags:[val]' type=kotlin.String? origin=null
          WHEN type=kotlin.String? origin=null
            BRANCH
              if: CALL 'FUN IR_BUILTINS_STUB name:EQEQ visibility:public modality:FINAL <> (arg0:kotlin.Any?, arg1:kotlin.Any?) returnType:kotlin.Boolean flags:[]' type=kotlin.Boolean origin=EQEQ
                arg0: GET_VAR 'VAR IR_TEMPORARY_VARIABLE name:tmp1_safe_receiver type:kotlin.Function0<kotlin.String>? flags:[val]' type=kotlin.Function0<kotlin.String>? origin=null
                arg1: CONST Null type=kotlin.Nothing? value=null
              then: CONST Null type=kotlin.Nothing? value=null
            BRANCH
              if: CONST Boolean type=kotlin.Boolean value=true
              then: CALL 'FUN IR_EXTERNAL_DECLARATION_STUB name:invoke visibility:public modality:ABSTRACT <> ($this:kotlin.Function0<kotlin.Function0.R>) returnType:kotlin.Function0.R flags:[]' type=kotlin.String origin=null
                $this: GET_VAR 'VAR IR_TEMPORARY_VARIABLE name:tmp1_safe_receiver type:kotlin.Function0<kotlin.String>? flags:[val]' type=kotlin.Function0<kotlin.String>? origin=null
