Welcome to the Premium Calculator API!

Here are the available endpoints and how to use them:

• GET /
  Returns this introduction to the API.
• GET /GetPlans
  Returns a list of all available plans.
  Example: Fetch all plans by sending a GET request to /GetPlans.
• POST /GetPremium
  Calculates the premium based on the provided request details.
  Request body (JSON):
  

  {
      "State": "NY",
      "Plan": "A",
      "DateOfBirth": "1985-05-10",
      "Age": 39
  }

  Example: Send a POST request with the above body to /GetPremium.
• POST /UpdatePlans
  Updates the list of plans with the provided list.
  Request body (JSON): A list of plan objects.
  Example: Send a POST request with the updated plans to /UpdatePlans.

For any errors or issues, appropriate error messages will be returned.