docs: function(path, templ, emptyTempl, initialiser) {
  		if (!templ)
  			throw new Error('yamvish each methods needs a template. (path : ' + path + ')');
  		templ = (typeof templ === 'string') ? y().use(templ) : templ;
  		if (emptyTempl)
  			emptyTempl = (typeof emptyTempl === 'string') ? y().use(emptyTempl) : emptyTempl;
  		return this.exec('each', [path, templ, emptyTempl, initialiser]);
  	}