lib/collection/property-base.js
function () {
        return arguments.length ? _.pick(this._, Array.prototype.slice.apply(arguments)) : _.cloneDeep(this._);
    }
function () {
        return arguments.length ? _.pick(this._, Array.prototype.slice.apply(arguments)) : _.cloneDeep(this._);
    }
function ( ) { return arguments . length ? _ . pick ( this . _ , Array . prototype . slice . apply ( arguments ) ) : _ . cloneDeep ( this . _ ) ; }
Returns the meta keys associated with the property

@returns {*}
Returns the meta keys associated with the property