code: function (base) {
        if (this.union === undefined) {
          if (base === undefined) {
            return this.baseURI;
          } else {
            this.baseURI = base;
            return this;
          }
        } else if (base === undefined) {
          return this.union[0].base();
        } else {
          $.each(this.union, function (i, databank) {
            databank.base(base);
          });
          return this;
        }
      }
docs: Sets or returns the base URI of the {@link jQuery.rdf.databank}.
  @param {String|jQuery.uri} [base]
  @returns A {@link jQuery.uri} if no base URI is specified, otherwise returns this {@link jQuery.rdf.databank} object.
  @see jQuery.rdf#base