code: public QueryBuilder nearSphere(final double longitude, final double latitude, final double maxDistance) {
          addOperand(QueryOperators.NEAR_SPHERE,
                     asList(longitude, latitude));
          addOperand(QueryOperators.MAX_DISTANCE,
                     maxDistance);
          return this;
      }
docs: Equivalent of the $nearSphere operand
  
  @param longitude   coordinate in decimal degrees
  @param latitude    coordinate in decimal degrees
  @param maxDistance max spherical distance
  @return {@code this}