Find meta-information about File. This predicate reads all 
terms upto the first term that is not a directive. It uses the module 
and meta_predicate directives to assemble the information described 
below.
These predicates fail if File is not a module-file.
| Path | is the canonical path to File | 
| Module | is the module defined in Path | 
| Export | is a list of predicate indicators. | 
| Meta | is a list of heads as they appear in
meta_predicate/1 
declarations. | 
| Src | is the place from which File 
is referenced. | 
- deprecated
- New code should use xref_public_list/3, 
which unifies all variations using an option list.