@Nullable
    static Check create(@NotNull PsiIfStatement ifStatement) {
      PsiExpression condition = ifStatement.getCondition();
      if (condition == null) return null;
      PsiStatement thenBranch = ifStatement.getThenBranch();
      if (thenBranch == null) return null;
      List<Instruction> instructions = OptionalToIfInspection.createInstructions(ControlFlowUtils.unwrapBlock(thenBranch));
      if (instructions == null) return null;
      PsiStatement elseBranch = ifStatement.getElseBranch();
      List<Instruction> elseInstructions = null;
      if (elseBranch != null) {
        elseInstructions = OptionalToIfInspection.createInstructions(ControlFlowUtils.unwrapBlock(elseBranch));
        if (elseInstructions == null) return null;
      }
      return new Check(condition, instructions, elseInstructions);
    }
@Nullable
    static Check create(@NotNull PsiIfStatement ifStatement)