pub unsafe extern "C" fn readstat_begin_writing_sas7bcat(
writer: *mut readstat_writer_t,
user_ctx: *mut c_void,
) -> readstat_error_tpub unsafe extern "C" fn readstat_begin_writing_sas7bcat(
writer: *mut readstat_writer_t,
user_ctx: *mut c_void,
) -> readstat_error_t