private static boolean isSignificant(@NotNull PsiStatement statement) {
      final Ref<Boolean> result = new Ref<>(Boolean.TRUE);
      statement.accept(new JavaRecursiveElementWalkingVisitor() {
        @Override
        public void visitExpression(@NotNull PsiExpression expression) {
          super.visitExpression(expression);
          result.set(Boolean.FALSE);
          stopWalking();
        }
      });
      return !result.get().booleanValue();
    }
private static boolean isSignificant(@NotNull PsiStatement statement)