Piqi_impl_piqi.FieldSourcetype t = {mutable name : Piqi_impl_piqi.name option;mutable typename : Piqi_impl_piqi.typename option;mutable mode : Piqi_impl_piqi.field_mode;mutable default : Piqi_impl_piqi.piqi_any option;mutable deprecated : bool;mutable piqtype : Piqi_impl_piqi.piqtype option;mutable unparsed_piq_ast : Piqi_impl_piqi.uint option;mutable piq_format : Piqi_impl_piqi.piq_format option;mutable piq_positional : bool option;mutable piq_flag_default : Piqi_impl_piqi.piqi_any option;mutable piq_alias : Piqi_impl_piqi.name option;mutable protobuf_name : string option;mutable code : int32 option;mutable protobuf_packed : bool;mutable json_name : string option;mutable json_omit_missing : bool option;mutable getopt_letter : Piqi_impl_piqi.word option;mutable getopt_doc : string option;mutable internal : bool;mutable proto_name : string option;mutable wire_packed : bool;}