code: function(class_path, constructor) {
  
  		if (class_path in this._sources) Lava.t('Class "' + class_path + '" is already defined');
  		this.constructors[class_path] = constructor;
  
  	}
docs: Register an existing function as a class constructor for usage with {@link Lava.ClassManager#getConstructor}()
  @param {string} class_path Full class path
  @param {function} constructor Constructor instance