validate: this with parent, child

[dan-leech]

validate() { this == this.parent[auth.uid].timestamp }
compiles into ".validate": "newData.val() == newData.parent[auth.uid].timestamp" supposed: ".validate": "newData.val() == newData.parent().child(auth.uid).child('timestamp').val()"

workaround is validate() { this == this.parent().child(auth.uid).child('timestamp').val() }