code: public void setIpGroupIds(java.util.Collection<String> ipGroupIds) {
          if (ipGroupIds == null) {
              this.ipGroupIds = null;
              return;
          }
  
          this.ipGroupIds = new com.amazonaws.internal.SdkInternalList<String>(ipGroupIds);
      }
docs: <p>
  The identifiers of the IP access control groups associated with the directory.
  </p>
  
  @param ipGroupIds
  The identifiers of the IP access control groups associated with the directory.