code: public GetAccountAuthorizationDetailsResult withGroupDetailList(GroupDetail... groupDetailList) {
          if (this.groupDetailList == null) {
              setGroupDetailList(new com.amazonaws.internal.SdkInternalList<GroupDetail>(groupDetailList.length));
          }
          for (GroupDetail ele : groupDetailList) {
              this.groupDetailList.add(ele);
          }
          return this;
      }
docs: <p>
  A list containing information about IAM groups.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setGroupDetailList(java.util.Collection)} or {@link #withGroupDetailList(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param groupDetailList
  A list containing information about IAM groups.
  @return Returns a reference to this object so that method calls can be chained together.