refactor: adjust to recent changes

Signed-off-by: jupyterjazz <saba.sturua@jina.ai>
docarray · JoanFM · Jul 19, 2023 · Jul 2, 2023 · Jul 2, 2023 · Jul 13, 2023
commit 92d05c695da92c18cf274867ac70c149affe1079
diff --git a/docarray/index/backends/milvus.py b/docarray/index/backends/milvus.py
@@ -831,9 +831,9 @@ def _map_embedding(self, embedding: AnyTensor) -> np.ndarray:
 
         return embedding
 
-    def __contains__(self, item) -> bool:
+    def _doc_exists(self, doc_id: str) -> bool:
         result = self._collection.query(
-            expr="id in " + str([item.id]),
+            expr="id in " + str([doc_id]),
             offset=0,
             output_fields=["serialized"],
         )