src/util/multiMap.js
/**
	 * Get an array of all keys in this map.
	 * 
	 * @returns {string[]} array of keys in this map, or an empty array if the map is empty
	 */
Get an array of all keys in this map.

@returns {string[]} array of keys in this map, or an empty array if the map is empty
Get an array of all keys in this map . @returns { string [] } array of keys in this map or an empty array if the map is empty
keySet() {
		const result = [];
		const len = this.size();
		for ( let i = 0; i < len; i += 1 ) {
			result.push(this.mappings[this.mappingNames[i]].key);
		}
		return result;
	}
keySet ( ) { const result = [ ] ; const len = this . size ( ) ; for ( let i = 0 ; i < len ; i += 1 ) { result . push ( this . mappings [ this . mappingNames [ i ] ] . key ) ; } return result ; }
Get an array of all keys in this map.
Get an array of all keys in this map .