code: public QueryBuilder withinCenterSphere(final double longitude, final double latitude, final double maxDistance) {
          addOperand(QueryOperators.WITHIN,
                     new BasicDBObject(QueryOperators.CENTER_SPHERE,
                                       asList(asList(longitude, latitude), maxDistance)));
          return this;
      }
docs: Equivalent of the $centerSphere operand mostly intended for queries up to a few hundred miles or km.
  
  @param longitude   coordinate in decimal degrees
  @param latitude    coordinate in decimal degrees
  @param maxDistance max spherical distance
  @return {@code this}