code: def validators_for_app():
      # Each application may add its own validator set
      return {
          "A": [
              RSASignatureValidator(),
              SchemaValidator(SchemaA, allow_extra_keys=False),
          ],
          "B": [
              SchemaValidator(SchemaB, allow_extra_keys=False),
              RSASignatureValidator(),
          ],
      }
  
file_path: hivemind/tests/test_dht_validation.py
imports: import dataclasses
  from typing import Dict
  import pytest
  from pydantic import BaseModel, StrictInt
  import hivemind
  from hivemind.dht.crypto import RSASignatureValidator
  from hivemind.dht.protocol import DHTProtocol
  from hivemind.dht.routing import DHTID
  from hivemind.dht.schema import BytesWithPublicKey, SchemaValidator
  from hivemind.dht.validation import CompositeValidator, DHTRecord
label_desc: Use image node_id 1 for calling a global function with example usage: validators_for_app() and returns: dict