available_pkg_ref_fields: A helper function for retrieving a list of available fields, identified based
on implementation of a pkg_ref_cache method for a given class.
Description
A helper function for retrieving a list of available fields, identified based
on implementation of a pkg_ref_cache method for a given class.
Usage
available_pkg_ref_fields(x)
Value
a list of available fields implemented with a pkg_ref_cache method
Arguments
- x
a package reference object