code: function( options ) {
  			options = options ? _.clone( options ) : {};
  			if ( options.silent ) {
  				options.silentChange = true;
  				delete options.silent;
  			}
  			return options;
  		}
docs: Rename options.silent to options.silentChange, so events propagate properly.
  (for example in HasMany, from 'addRelated'->'handleAddition')
  @param {Object} [options]
  @return {Object}