code: public ListTagsForResourcesResult withResourceTagSets(ResourceTagSet... resourceTagSets) {
          if (this.resourceTagSets == null) {
              setResourceTagSets(new com.amazonaws.internal.SdkInternalList<ResourceTagSet>(resourceTagSets.length));
          }
          for (ResourceTagSet ele : resourceTagSets) {
              this.resourceTagSets.add(ele);
          }
          return this;
      }
docs: <p>
  A list of <code>ResourceTagSet</code>s containing tags associated with the specified resources.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setResourceTagSets(java.util.Collection)} or {@link #withResourceTagSets(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param resourceTagSets
  A list of <code>ResourceTagSet</code>s containing tags associated with the specified resources.
  @return Returns a reference to this object so that method calls can be chained together.