assertThrows(UnsupportedOperationException.class, () -> nodes.add(N2));
    addNode(N1);
    assertThat(network.nodes()).containsExactlyElementsIn(nodes);
  }

  @Override
  @Test
  public void edges_checkReturnedSetMutability() {
    Set<String> edges = network.edges();
    assertThrows(UnsupportedOperationException.class, () -> edges.add(E12));
    addEdge(N1, N2, E12);

                                                        c.add(interpolated);
                                                    } else {
                                                        c.add(value);
                                                    }
                                                } else {
                                                    c.add(value);

      HashMultiset<Integer> multiset = HashMultiset.<Integer>create();
      multisets.add(multiset);
      queries[i] = random.nextInt();
      multiset.add(queries[i]);
    }
  }

  @Benchmark
  int add(int reps) {
    int tmp = 0;
    for (int i = 0; i < reps; i++) {
      int j = i & ARRAY_MASK;
      tmp += multisets.get(j).add(queries[j], 4);
    }
    return tmp;
  }

* Start the title with a verb. For example `Add`, `Refactor`, `Fix`, etc. This way the title will say the action that the PR does. Like `Add support for teleporting`, instead of `Teleporting wasn't working, so this PR fixes it`.
* Edit the text of the PR title to start in "imperative", like giving an order. So, instead of `Adding support for teleporting` use `Add support for teleporting`.

        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);

  }

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

  /**

        foo.setDuplicateHostName("foo.com");
        duplicateHostHelper.duplicateHostList.add(foo);
        DuplicateHost bar = new DuplicateHost();
        bar.setRegularName("www.bar.com");
        bar.setDuplicateHostName("mail.bar.com");
        duplicateHostHelper.duplicateHostList.add(bar);
        DuplicateHost hoge = new DuplicateHost();
        hoge.setRegularName("www.foo.com");

        } 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));

				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())
						}
					}
				}
			}
		}