code: public void setGroupDetailList(java.util.Collection<GroupDetail> groupDetailList) {
          if (groupDetailList == null) {
              this.groupDetailList = null;
              return;
          }
  
          this.groupDetailList = new com.amazonaws.internal.SdkInternalList<GroupDetail>(groupDetailList);
      }
docs: <p>
  A list containing information about IAM groups.
  </p>
  
  @param groupDetailList
  A list containing information about IAM groups.