在Firebase Cloud Functions（Firestore）中获取文档ID

Firebase Cloud Function中是否可以使用字段和数据查询文档ID？

在Android中，我将执行以下操作：

FirebaseFirestore fs = FirebaseFirestore.getInstances();

static final String mInterfaceId = "57ZNmAIldUPAc6ZWggvF";

fs.collection("users").whereEqualTo("interface_id", mInterfaceId).get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
            @Override
            public void onComplete(@NonNull Task<QuerySnapshot> task) {

                for(DocumentSnapshot doc : task.getResult())
                    userId[0] = doc.getId();
                
                if(userId.length==0)
                    Log.e("Error: ID Not found");
                else
                    if(userId.length>1)
                        Log.e("Error: More than one ID found");
                    else
                        // Continue Process with Found ID
                
            }
        });

提前致谢！