code: function(min, max) {
      return function limitZoom(params) {
        params.zoom = clamp(params.zoom, min, max);
        return params;
      };
    }
docs: Returns a view limiter than constrains the zoom parameter.
  @param {number} min The minimum zoom value.
  @param {number} max The maximum zoom value.
  @return {FlatViewLimiter}