code: @Override
      public Set<EmbeddableType<?>> getEmbeddables()
      {
          Set embeddableEntities = null;
          if (embeddables != null)
          {
              embeddableEntities = new HashSet(embeddables.values());
          }
          return embeddableEntities;
      }
docs: /*
  (non-Javadoc)
  
  @see javax.persistence.metamodel.Metamodel#getEmbeddables()