Reference resolution

[gk12277]

Hi have a document,

type: object
properties:
     pet: 
         type: string
         ref_key: main.property

Whenever ref_key is encountered a custom function is called.
Inside the function I convert ref_key to an actual reference and resolve it.( Something like { $ref: "#/main/property" }.
Currently I am doing the resolution on my own.
I noticed that spectral resolves references and throws error in case of invalid reference. So, is there a way for me to converted the ref_key to actual reference and call spectral for resolving reference in my custom function.

I found i could call built in function for truthy but didn't find a way to resolve references.