public StackValue generateWhenExpression(final KtWhenExpression expression, final boolean isStatement) {
        final KtExpression expr = expression.getSubjectExpression();
        final Type subjectType = expressionType(expr);

        final Type resultType = isStatement ? Type.VOID_TYPE : expressionTypeForBranchingOperation(expression);

        return StackValue.operation(resultType, new Function1<InstructionAdapter, Unit>() {
            @Override
            public Unit invoke(InstructionAdapter v) {
                SwitchCodegen switchCodegen = SwitchCodegenUtil.buildAppropriateSwitchCodegenIfPossible(
                        expression, isStatement, CodegenUtil.isExhaustive(bindingContext, expression, isStatement),
                        ExpressionCodegen.this
                );
                if (switchCodegen != null) {
                    switchCodegen.generate();
                    return Unit.INSTANCE;
                }
              
                /*  .... */
                
                return null;
            }
        });
    }