code: public JavascriptVarBuilder appendRowColProperty(final int row, final int col, final String propertyValue, final boolean quoted) {
          return appendProperty("r" + row + "_c" + col, propertyValue, quoted);
      }
docs: appends a property with the name "rYY_cXX" where YY is the row and XX is he column.
  
  @param row
  @param col
  @param propertyValue
  @param quoted
  @return