code: public void free()
      {
          if (m_recPackagesTree != null)
              m_recPackagesTree.free();
          m_recPackagesTree = null;
          if (m_recPackagesExclude != null)
              m_recPackagesExclude.free();
          m_recPackagesExclude = null;
          super.free();
      }
docs: Free Method.