Clarification of AbstractRepository deprecations

src/Discord/Repository/AbstractRepository.php

@@ -466,6 +466,7 @@ public function cachePull($key, $default = null): ExtendedPromiseInterface
      * Pushes a single item to the repository.
      *
      * @deprecated 10.0.0 Use async `$repository->cache->set()`
+     * This method is deprecated for userland code but can still be used internally within the library.
      *
      * @param Part $item
      *
@@ -649,6 +650,7 @@ public function keys(): array
      * If the repository has an offset.
      *
      * @deprecated 10.0.0 Use async `$repository->cache->has()`
+     * This method is deprecated for userland code but can still be used internally within the library.
      *
      * @param string|int $offset
      *
@@ -663,6 +665,7 @@ public function offsetExists($offset): bool
      * Gets a part from the repository.
      *
      * @deprecated 10.0.0 Use async `$repository->cacheGet()` or sync `$repository->get()`
+     * This method is deprecated for userland code but can still be used internally within the library.
      *
      * @param string|int $offset
      *