Wrapper.MakeSpecialized module to handle translation to/from a specific context backend implementation
module C : sig ... endtype repo = C.repotype tree = C.treetype mut_state = C.mut_stateType used by the mutable API for PVMs
val of_node_context : 'a index -> ('a, repo) Context_sigs.indexval to_node_context : ('a, repo) Context_sigs.index -> 'a index