pub unsafe extern "C" fn wtap_block_get_string_option_value(
block: wtap_block_t,
option_id: guint,
value: *mut *mut c_char,
) -> wtap_opttype_return_valpub unsafe extern "C" fn wtap_block_get_string_option_value(
block: wtap_block_t,
option_id: guint,
value: *mut *mut c_char,
) -> wtap_opttype_return_val