module Ast_walker_annotate_context:sig..end
type 'a annotation_context 
type'aannotation_update_fn ='a -> Xquery_core_ast.acexpr -> unit
val build_annotation_context : 'a ->
       'a annotation_update_fn ->
       'a annotation_context
val get_annotation_context : 'a annotation_context -> 'a
val get_annotation_update_fn : 'a annotation_context ->
       'a annotation_update_fn