Function unqlite::ffi::unqlite_kv_fetch_callback

pub unsafe extern "C" fn unqlite_kv_fetch_callback(
    pDb: *mut unqlite, 
    pKey: *const c_void, 
    nKeyLen: c_int, 
    xConsumer: Option<unsafe extern "C" fn(arg1: *const c_void, arg2: c_uint, arg3: *mut c_void) -> c_int>, 
    pUserData: *mut c_void
) -> c_int