Function libsqlite3_sys::sqlite3_collation_needed

pub unsafe extern "C" fn sqlite3_collation_needed(
    arg1: *mut sqlite3, 
    arg2: *mut c_void, 
    arg3: Option<unsafe extern "C" fn(_: *mut c_void, _: *mut sqlite3, _: c_int, _: *const c_char)>
) -> c_int