lexObserverEffect", "observer method `" + effect.method + "` not defined"));
}
},
_computeEffect: function(source, value, effect) {
var args = Polymer.Bind._marshalArgs(this.__data__, effect, source, value);
if (args) {
var fn = this[effect.method];
if (fn) {
this[effect.property] = fn.apply(this, args);
} else {
this._warn(this._logf("_computeEffect", "compute method `" + effect.method + "` not defined"));
}
}
},
_annotatedComputationEffect: function(source, value, effect) {
var computedHost = this._rootDa