Filter out all the elementfactories in @list that can handle @caps in
the given direction.
If @subsetonly is %TRUE, then only the elements whose pads templates
are a complete superset of @caps will be returned. Else any element
whose pad templates caps can intersect with @caps will be returned.
Filter out all the elementfactories in @list that can handle @caps in the given direction.
If @subsetonly is %TRUE, then only the elements whose pads templates are a complete superset of @caps will be returned. Else any element whose pad templates caps can intersect with @caps will be returned.