#[no_mangle]
extern "C" fn ICU4XCaseMapper_fold(
this: &ICU4XCaseMapper,
s_diplomat_data: *const u8,
s_diplomat_len: usize,
write: &mut DiplomatWriteable,
) -> DiplomatResult<(), ICU4XError>
#[no_mangle]
extern "C" fn ICU4XCaseMapper_fold(
this: &ICU4XCaseMapper,
s_diplomat_data: *const u8,
s_diplomat_len: usize,
write: &mut DiplomatWriteable,
) -> DiplomatResult<(), ICU4XError>