code: function(start_index, count) {
  
  		if (count <= 0) Lava.t("Invalid item count supplied for removeRange");
  		if (start_index + count >= this._count + 1) Lava.t("Index is out of range");
  
  		var removed_uids = this._data_uids.splice(start_index, count),
  			removed_values = this._data_values.splice(start_index, count),
  			removed_names = this._data_names.splice(start_index, count);
  
  		this._setLength(this._count - count);
  
  		this._fire('items_removed', {
  			uids: removed_uids,
  			values: removed_values,
  			names: removed_names
  		});
  
  		this._fire('collection_changed');
  
  		return removed_values;
  
  	}
docs: Remove range of indices from collection and return removed values
  @param {number} start_index
  @param {number} count
  @returns {Array} Removed values