code: public ListGroupsResult withGroupIdentifiers(GroupIdentifier... groupIdentifiers) {
          if (this.groupIdentifiers == null) {
              setGroupIdentifiers(new java.util.ArrayList<GroupIdentifier>(groupIdentifiers.length));
          }
          for (GroupIdentifier ele : groupIdentifiers) {
              this.groupIdentifiers.add(ele);
          }
          return this;
      }
docs: <p>
  A list of GroupIdentifier objects. Each identifier is an object that contains both the GroupName and the
  GroupArn.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setGroupIdentifiers(java.util.Collection)} or {@link #withGroupIdentifiers(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param groupIdentifiers
  A list of GroupIdentifier objects. Each identifier is an object that contains both the GroupName and the
  GroupArn.
  @return Returns a reference to this object so that method calls can be chained together.