Function implement

src/dependency.ts:76–81

* Turn any object into an IDependable.

(instance: IDependable, trait: Dependable)

   * Turn any object into an IDependable.
   */
  public static implement(instance: IDependable, trait: Dependable) {
    // I would also like to reference classes (to cut down on the list of objects
    // we need to manage), but we can't do that either since jsii doesn't have the
    // concept of a class reference.
    (instance as any)[DEPENDABLE_SYMBOL] = trait;
  }

  /**
   * Return the matching Dependable for the given class instance.