code: public final int key(int x, int y, int z) {
          return (((x - bx) & 0x3FF) << 22) | (((y - by) & 0x3FF) << 11) | ((z - bz) & 0x3FF);
      }
docs: Packs given x, y, z coordinates.  The coords must represent a point within a 1024 sized cuboid with the base at the (bx, by, bz)
  
  @param x an <code>int</code> value
  @param y an <code>int</code> value
  @param z an <code>int</code> value
  
  @return the packed int