private boolean isWrittenInside(final PsiVariable variable) {
            final List<Instruction> instructions = myControlFlow.getInstructions();
            for (int i = myFlowStart; i < myFlowEnd; i++) {
              Instruction instruction = instructions.get(i);
              if (instruction instanceof WriteVariableInstruction && variable.equals(((WriteVariableInstruction)instruction).variable)) {
                return true;
              }
            }

            return false;
          }
private boolean isWrittenInside(final PsiVariable variable)