his is the OOB interface class available for the customization.
Namespace
vlocity_cmt
The namespace in which the Vlocity managed package is installed on your Salesforce org.
Method
vlocity_cmt.TMFOpenAPIProductService.postProductOffering( Map<String, Object>input, Map<String,Object> output)
The signature of the OOB remote method.
Signature of the Interface
global interface TMFOpenAPIPostProdOfferingInterface { Object postProductOffering( Map<String, Object>input, Map<String,Object> output); }