* specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cli.event;

import java.io.File;
import java.nio.file.Path;
import java.util.List;
import java.util.Objects;

import org.apache.maven.api.services.MessageBuilder;
import org.apache.maven.api.services.MessageBuilderFactory;
import org.apache.maven.execution.AbstractExecutionListener;

  static <T> List<T> defensiveCopy(Iterable<T> iterable) {
    ArrayList<T> list = new ArrayList<>();
    for (T element : iterable) {
      list.add(checkNotNull(element));
    }
    return list;
  }

  private Predicates() {}

  public void testValues() {
    List<V> expected = new ArrayList<>();
    for (Entry<K, V> entry : getSampleElements()) {
      expected.add(entry.getValue());
    }
    assertEqualIgnoringOrder(expected, multimap().values());
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testValuesInOrder() {
    List<V> expected = new ArrayList<>();

有些类型可以在方括号中接收“类型参数”（type parameters），用于声明其内部值的类型。比如“字符串列表”可以写为 `list[str]`。

这些能接收类型参数的类型称为“泛型类型”（Generic types）或“泛型”（Generics）。

你可以把相同的内建类型作为泛型使用（带方括号和内部类型）：

* `list`
* `tuple`
* `set`
* `dict`

#### 列表 { #list }

例如，我们来定义一个由 `str` 组成的 `list` 变量。

用同样的冒号（`:`）语法声明变量。

类型写 `list`。

因为 list 是一种包含内部类型的类型，把内部类型写在方括号里：

        validateApi(body, messages -> {});
        final RelatedQueryPager pager = copyBeanToNewBean(body, RelatedQueryPager.class);
        final List<RelatedQuery> list = relatedQueryService.getRelatedQueryList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                        .total(pager.getAllRecordCount())

   * implementation, however, has the advantage of working for insertion-ordered containers, as
   * well.
   */
  @Override
  public List<String> order(List<String> insertionOrder) {
    return insertionOrder;
  }

   * implementation, however, has the advantage of working for insertion-ordered containers, as
   * well.
   */
  @Override
  public List<Integer> order(List<Integer> insertionOrder) {
    return insertionOrder;
  }

   * implementation, however, has the advantage of working for insertion-ordered containers, as
   * well.
   */
  @Override
  public List<String> order(List<String> insertionOrder) {
    return insertionOrder;
  }

    public ColumnInfo columnGidNumber() {
        return _columnGidNumber;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    protected List<ColumnInfo> ccil() {
        List<ColumnInfo> ls = newArrayList();
        ls.add(columnGidNumber());
        ls.add(columnName());
        return ls;
    }

    /**
     * Gets the child nodes of this node.
     *
     * @return the child nodes of this node, never {@code null}
     */
    @Nonnull
    List<Node> getChildren();

    /**
     * @return repositories of this node
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**
     * The repository where this artifact has been downloaded from.
     */
    @Nonnull