code: public void clear() {
  
          if (m_originalItems != null) {
              m_originalItems.clear();
          }
          m_filteredItems = null;
          synchronized (this) {
              if (m_visibleItems != null) {
                  m_visibleItems.clear();
              }
          }
          setSearchFilter("");
          m_sortedColumn = null;
      }
docs: This method resets the content of the list (no the metadata).<p>