Resource Location (Data Type) - MerchantCalico/bovines-and-buttercups-archive GitHub Wiki
Another common alias of this is Identifier but this mod uses the official Mojang name, Resource Location.
A String that contains a namespace and a path which points to the location of a specific piece of content. These two values are separated by a :.
Example
{
"flower_model": "example:example_flower"
}
A resource location that has a namespace of example and a path of example_flower.