Get removed item's key from child_removed firebase event -

is possible retrieve key of removed child's key in firbase's on('child_removed') callback function?

from firebase documentation on('value':

this event triggered once every time child removed. datasnapshot passed callback old data child removed.

firebaseref.on('child_removed', function(oldchildsnapshot) {   console.log('child '+oldchildsnapshot.key()+' removed'); });