this.targetClass = targetClass
    }

    def void addMixin(String plugin, String mixinClass) {
        mixinClasses.add(new MixinMetaData(plugin, mixinClass))
    }

    def void addExtension(String plugin, String extension, String extensionClass) {
        extensionClasses.add(new ExtensionMetaData(plugin, extension, extensionClass))
    }

import java.util.List;

/**
 * @author shinsuke
 *
 */
public class FtpAuthenticationHolder {
    List<FtpAuthentication> authList = new ArrayList<>();

    public void add(final FtpAuthentication auth) {
        authList.add(auth);
    }

    public FtpAuthentication get(final String path) {
        if (path == null) {
            return null;
        }

		setCopy[k] = v
	}
	return setCopy
}

// add - adds TargetID to the set.
func (set TargetIDSet) add(targetID TargetID) {
	set[targetID] = struct{}{}
}

// Union - returns union with given set as new set.
func (set TargetIDSet) Union(sset TargetIDSet) TargetIDSet {
	nset := set.Clone()

	for k := range sset {
		nset.add(k)
	}

	return nset
}

    ImmutableDoubleArray rightSized = ImmutableDoubleArray.builder(3).add(0).add(1).add(3).build();
    assertDoesntActuallyTrim(rightSized);

    ImmutableDoubleArray overSized = ImmutableDoubleArray.builder(3).add(0).add(1).build();
    assertActuallyTrims(overSized);

    ImmutableDoubleArray underSized = ImmutableDoubleArray.builder(2).add(0).add(1).add(3).build();
    assertActuallyTrims(underSized);
  }

```

          || !(uncontended = a.cas(v = a.value, v + x))) retryUpdate(x, hc, uncontended);
    }
  }

  /** Equivalent to {@code add(1)}. */
  @Override
  public void increment() {
    add(1L);
  }

  /** Equivalent to {@code add(-1)}. */
  public void decrement() {
    add(-1L);
  }

  /**
   * Returns the current sum. The returned value is NOT an atomic snapshot; invocation in

        DefaultProblemCollector collector = new DefaultProblemCollector(null);

        collector.add(null, "PROBLEM1", -1, -1, null);

        collector.setSource("SOURCE_PROBLEM2");
        collector.add(null, "PROBLEM2", -1, -1, null);

        collector.setSource("SOURCE_PROBLEM3");
        collector.add(null, "PROBLEM3", -1, -1, null);

        assertEquals("", collector.getProblems().get(0).getSource());

              public Collection<String> create(String[] elements) {
                List<String> unfiltered = newArrayList();
                unfiltered.add("yyy");
                unfiltered.addAll(ImmutableList.copyOf(elements));
                unfiltered.add("zzz");
                unfiltered.add("abc");
                return Collections2.filter(Collections2.filter(unfiltered, LENGTH_1), NOT_YYY_ZZZ);
              }
            })

public class WebApiManagerFactory {

    protected WebApiManager[] webApiManagers = {};

    public void add(final WebApiManager webApiManager) {
        final List<WebApiManager> list = new ArrayList<>();
        Collections.addAll(list, webApiManagers);
        list.add(webApiManager);
        webApiManagers = list.toArray(new WebApiManager[list.size()]);
    }

        final CsvWriter csvWriter = new CsvWriter(writer, cfg);
        try {
            final List<String> list = new ArrayList<>();
            list.add("SessionId");
            list.add("SessionCreatedTime");
            list.add("Key");
            list.add("Value");
            list.add("CreatedTime");
            csvWriter.writeValues(list);