val type_extension : Ppx_core.core_type ‑> Ppx_core.core_typeval core_type : path:Ppx_core.string ‑> Ppx_core.core_type ‑> Ppx_core.expressionval sig_type_decl : poly:Ppx_core.bool ‑> loc:Ppx_core.Location.t ‑> path:Ppx_core.string ‑> (Ppx_core.rec_flag * Ppx_core.type_declaration Ppx_core.list) ‑> Ppx_core.signatureval str_type_decl : loc:Ppx_core.Location.t ‑> poly:Ppx_core.bool ‑> path:Ppx_core.string ‑> (Ppx_core.rec_flag * Ppx_core.type_declaration Ppx_core.list) ‑> Ppx_core.structure