val caller_identity : Bin_prot.Shape.Uuid.t
val length : 'a t ‑> int
val bin_size_el : ('a, 'a el) Bin_prot.Size.sizer1
val bin_write_el : ('a, 'a el) Bin_prot.Write.writer1
val bin_read_el : ('a, 'a el) Bin_prot.Read.reader1
val bin_shape_el : Bin_prot.Shape.t ‑> Bin_prot.Shape.t