Configparser.DefaultMapSourceinclude Collections.Abc.POLYMORPHIC_MUTABLE_MAPPING with type key = stringinclude Collections.Abc.POLYMORPHIC_MAPPING
with type key := key
and type 'value t := 'value tinclude Collections.Abc.POLYMORPHIC_COLLECTION
with type key := key
and type 'value t := 'value t
and type i := keyinclude Collections.Abc.POLYMORPHIC_SIZED with type 'e t := 'e t