input: Write a function to store and query user data in a JSON file. The store_user_data function should take a dictionary as input and save it to a JSON file named 'user_data.json'. The get_user_data function should return the user data from the JSON file. Both functions should handle JSON files appropriately.
  
  assert store_user_data({ "Name": "John", "Age": 25, "City": "New York" }) is None
  assert get_user_data() == { "Name": "John", "Age": 25, "City": "New York" }
output: import json
  
  def store_user_data(user_data):
      with open('user_data.json', 'w') as file:
          json.dump(user_data, file)
  
  def get_user_data():
      with open('user_data.json', 'r') as file:
          return json.load(file)