code: static boolean isWedged(IBond bond) {
          return (bond.getStereo() == IBond.Stereo.UP || bond.getStereo() == IBond.Stereo.DOWN
                  || bond.getStereo() == IBond.Stereo.UP_INVERTED || bond.getStereo() == IBond.Stereo.DOWN_INVERTED);
      }
docs: A bond is wedge if it points up or down.
  
  @param bond a non-null bond
  @return the bond is wedge (bold or hashed)