AddLinkEntry类是原始类型。泛型类型AddLinkEntry类<T>的引用应参数化

我有下面一行抛出“AddLinkEntry是一个原始类型。对泛型类型AddLinkEntry的引用应参数化为“警告”

List<AddLinkEntry> addLinkCache = new ArrayList<AddLinkEntry>();

还有AddLinkEntry类

public class AddLinkEntry<T> {

  /**
   * Function that Adds a link between this object and given object
   */
  private IAddLinkToObjectFunctional<T> objectFunctional;

  /**
   * ID of given object
   */
  private Id id;

  /**
   * Constructs a new {AddLinkEntry<T>}.
   * 
   * @param objectFunctional
   *        Function that Adds a link between this object and given object
   * @param id
   *        ID of given object
   */
  public AddLinkEntry(IAddLinkToObjectFunctional<T> objectFunctional, Id id) {
    this.objectFunctional = objectFunctional;
    this.id = id;
  }

  /**
   * Retrieve a function that Adds a link between this object and given object
   */
  public IAddLinkToObjectFunctional<T> executeLinkage() {
    return objectFunctional;
  }

  /**
   * Retrieve an Id
   */
  public Id getId() {
    return id;
  }

  @FunctionalInterface
  public interface IAddLinkToObjectFunctional<T> {

    /**
     * Adds a link between this object and given object
     * 
     * @param objectNode a given object to link
     */
    void addLink(T objectNode);
  }
}

我想知道是什么原因导致的警告,以及如何摆脱它而不使用抑制警告?