input: from typing import Dict
  
  def store_user_data(data: Dict) -> None:
      """
      Function to store user data in a JSON file named 'user_data.json'.
  
      >>> store_user_data({"Name": "John", "Age": 25, "City": "New York"})
      >>> # A file named 'user_data.json' is created with the given data
      """
  
  def get_user_data() -> Dict:
      """
      Function to retrieve user data from the JSON file named 'user_data.json'.
  
      >>> get_user_data()
      {'Name': 'John', 'Age': 25, 'City': 'New York'}
      """
output:     
      import json
  
      with open('user_data.json', 'w') as file:
          json.dump(data, file)
  
  def get_user_data() -> Dict:
      import json
  
      try:
          with open('user_data.json', 'r') as file:
              return json.load(file)
      except FileNotFoundError:
          return {}
  