code: function(row) {
      var elRow = this.getTrEl(row) || this.getFirstTrEl();
      if(elRow && (elRow.cells.length > 0)) {
          return elRow.cells[0];
      }
      return null;
  }
docs: Returns DOM reference to the first TD element in the DataTable page (by default),
  the first TD element of the optionally given row, or null.
  
  @method getFirstTdEl
  @param row {HTMLElement} (optional) row from which to get first TD
  @return {HTMLElement} Reference to TD element.