MongoDB unset key-value pair with API

Hi,

What is the DreamFactory REST API equivalent of MongoDB’s $unset : { key : 1 }?
Trying to remove a key-value pair from a JSON document, for example:
Old document:
{
“_id”: ObjectID(“123abc”),
“application_name”: “some name”,
“random”: “value”
}

New document:
{
“_id”: ObjectID(“123abc”),
“application_name”: “some name”
}

-Adrian