vendor/emmet.js
function(name, collection) {
			if (!elementTypes[collection])
				elementTypes[collection] = [];
			
			var col = this.getCollection(collection);
			if (!_.include(col, name))
				col.push(name);
		}
function(name, collection) {
			if (!elementTypes[collection])
				elementTypes[collection] = [];
			
			var col = this.getCollection(collection);
			if (!_.include(col, name))
				col.push(name);
		}
Adds new element into collection
@param {String} name Element name
@param {String} collection Collection name