code: public void setViewBox(final int westE6, final int northE6, final int eastE6, final int southE6) {
          this.viewBox = new BoundingBox();
          this.viewBox.setWestE6(westE6);
          this.viewBox.setNorthE6(northE6);
          this.viewBox.setEastE6(eastE6);
          this.viewBox.setSouthE6(southE6);
      }
docs: Sets the preferred area to find search results;
  
  @param westE6
  the west bound
  @param northE6
  the north bound
  @param eastE6
  the east bound
  @param southE6
  the south bound