pub unsafe extern "C" fn rcutils_string_map_unset(
string_map: *mut rcutils_string_map_t,
key: *const c_char,
) -> rcutils_ret_t
pub unsafe extern "C" fn rcutils_string_map_unset(
string_map: *mut rcutils_string_map_t,
key: *const c_char,
) -> rcutils_ret_t