code: public void addColumn(String columnName, boolean searchable, boolean orderable,
        String searchValue) {
      this.columns.add(new Column(columnName, "", searchable, orderable,
          new Search(searchValue, false)));
    }
docs: Add a new column
  
  @param columnName the name of the column
  @param searchable whether the column is searchable or not
  @param orderable whether the column is orderable or not
  @param searchValue if any, the search value to apply