# Copyright The IETF Trust 2007, All Rights Reserved

def related_docs(alias):
    results = list(alias.document.docalias_set.all())
    
    rels = alias.document.all_relations_that_doc(['replaces','obs'])

    for rel in rels:
        rel_aliases = list(rel.target.document.docalias_set.all())
        
        for x in rel_aliases:
            x.related = rel
            x.relation = rel.relationship.revname
        results += rel_aliases 
    return list(set(results))