code: function(key, point) {
        if (!(point instanceof Parse.GeoPoint)) {
          // Try to cast it to a GeoPoint, so that near("loc", [20,30]) works.
          point = new Parse.GeoPoint(point);
        }
        this._addCondition(key, "$nearSphere", point);
        return this;
      }
docs: Add a proximity based constraint for finding objects with key point
  values near the point given.
  @param {String} key The key that the Parse.GeoPoint is stored in.
  @param {Parse.GeoPoint} point The reference Parse.GeoPoint that is used.
  @return {Parse.Query} Returns the query, so you can chain this call.