return 0;
  }

  /**
   * A sensible definition of {@link #add(Object)} in terms of {@link #add(Object, int)}. If you
   * override {@link #add(Object, int)}, you may wish to override {@link #add(Object)} to forward to
   * this implementation.
   *
   * @since 7.0
   */
  protected boolean standardAdd(@ParametricNullness E element) {
    add(element, 1);
    return true;
  }

  /**

public class IngestFactoryTest extends UnitFessTestCase {

    public void test_add_1() {
        IngestFactory factory = new IngestFactory();
        factory.add(new TestIngester(1));
        factory.add(new TestIngester(2));
        factory.add(new TestIngester(3));
        Ingester[] ingesters = factory.getIngesters();
        assertEquals(1, ingesters[0].getPriority());
        assertEquals(2, ingesters[1].getPriority());

        List<ColumnInfo> ls = newArrayList();
        ls.add(columnCreatedBy());
        ls.add(columnCreatedTime());
        ls.add(columnExcludedPaths());
        ls.add(columnIncludedPaths());
        ls.add(columnName());
        ls.add(columnPermissions());
        ls.add(columnSortOrder());
        ls.add(columnUpdatedBy());
        ls.add(columnUpdatedTime());
        ls.add(columnValue());
        ls.add(columnVirtualHost());

        final CsvWriter csvWriter = new CsvWriter(writer, cfg);
        try {
            final List<String> list = new ArrayList<>();
            list.add("SuggestWord");
            list.add("Reading");
            list.add("Permissions");
            list.add("Labels");
            list.add("Boost");
            csvWriter.writeValues(list);

    testers.add(SetMultimapAsMapTester.class);
    testers.add(SetMultimapEqualsTester.class);
    testers.add(SetMultimapPutTester.class);
    testers.add(SetMultimapPutAllTester.class);
    testers.add(SetMultimapReplaceValuesTester.class);
    testers.add(SortedSetMultimapAsMapTester.class);
    testers.add(SortedSetMultimapGetTester.class);
    return testers;
  }

  @Override

     * implementations, supports add() under JDK8. This seems problematic, but I
     * didn't see that discussed in the review, which included many other
     * changes: https://mail.openjdk.org/pipermail/core-libs-dev/2013-May/thread.html#17367
     *
     * TODO(cpovirk): decide what the best long-term action here is: force users
     * to suppress (as we do now), stop testing entrySet().add() at all, make

        } catch (ParameterNotInstantiableException e) {
          paramErrors.add(e);
        } catch (ParameterHasNoDistinctValueException e) {
          distinctValueErrors.add(e);
        } catch (InvocationTargetException e) {
          instantiationExceptions.add(e);
        } catch (FactoryMethodReturnsNullException e) {
          nullErrors.add(e);
        }
      }
    }
    throwFirst(paramErrors);

        List<String> listWithNulls = new ArrayList<>();
        listWithNulls.add(null);
        listWithNulls.add(null);
        assertEquals(0L, MemoryUtil.sizeOf(listWithNulls));

        // Mixed content collection
        List<Object> mixedList = new ArrayList<>();
        mixedList.add("test");
        mixedList.add(123);
        mixedList.add(null);
        assertEquals(84L, MemoryUtil.sizeOf(mixedList));

    if (runCollectionTests) {
      testers.addAll(super.getTesters());
    }

    testers.add(QueueElementTester.class);
    testers.add(QueueOfferTester.class);
    testers.add(QueuePeekTester.class);
    testers.add(QueuePollTester.class);
    testers.add(QueueRemoveTester.class);
    return testers;
  }

				case reflect.Struct:
					reflectResults = reflect.Append(reflectResults, result.Addr())
				case reflect.Slice, reflect.Array:
					for i := 0; i < result.Len(); i++ {
						if elem := result.Index(i); elem.Kind() == reflect.Ptr {
							reflectResults = reflect.Append(reflectResults, elem)
						} else {
							reflectResults = reflect.Append(reflectResults, elem.Addr())
						}
					}
				}
			}
		}