Make.OperationMavryk operations.
type shell_header = Mavryk_base.TzPervasives.Operation.shell_header = {branch : Block_hash.t;The operation is only valid in a branch containing the block branch.
}val shell_header_encoding : shell_header Data_encoding.tinclude S.HASHABLE with type t := t and type hash := Operation_hash.tval hash : t -> Operation_hash.tval hash_raw : bytes -> Operation_hash.t