nl_tokens: If you want to do normalizations specific to some part of the payload you can specify those under normalizeHash .
pl_tokens: function ( type , hash , prop ) { this . normalizeId ( hash ) ; this . normalizeAttributes ( type , <mask> ) ; this . normalizeRelationships ( type , hash ) ; this . normalizeUsingDeclaredMapping ( type , hash ) ; if ( this . normalizeHash && this . normalizeHash [ prop ] ) { this . normalizeHash [ prop ] ( hash ) ; } return this . _super ( type , hash , prop ) ; }