(self, link, package_name)
Returns a link to a cached item if it exists, otherwise returns the
        passed link.
Returns a link to a cached item if it exists, otherwise returns the
        passed link.
Returns a link to a cached item if it exists otherwise returns the passed link .
def get(self, link, package_name):
        # type: (Link, Optional[str]) -> Link
        """Returns a link to a cached item if it exists, otherwise returns the
        passed link.
        """
        raise NotImplementedError()
def get ( self , link , package_name ) : # type: (Link, Optional[str]) -> Link raise NotImplementedError ( )