pub unsafe extern "C" fn sqlite3_create_function_v2(
p: *mut sqlite3,
p: *const c_char,
n: c_int,
n: c_int,
p: *mut c_void,
f: Option<sqlite3_create_function_callback1>,
f: Option<sqlite3_create_function_callback1>,
f: Option<sqlite3_create_function_callback2>,
f: Option<sqlite3_callback>,
) -> c_int