code: public ListCollectionsResult withCollectionIds(String... collectionIds) {
          if (this.collectionIds == null) {
              setCollectionIds(new java.util.ArrayList<String>(collectionIds.length));
          }
          for (String ele : collectionIds) {
              this.collectionIds.add(ele);
          }
          return this;
      }
docs: <p>
  An array of collection IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCollectionIds(java.util.Collection)} or {@link #withCollectionIds(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param collectionIds
  An array of collection IDs.
  @return Returns a reference to this object so that method calls can be chained together.