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```python
# AI Dev Tool: Visa Mastercard Anticompetitive Fees API Integration Wrapper
# Description: A Python wrapper for handling Visa and Mastercard API integrations
#              with a focus on anticompetitive fees litigation.

import requests
from typing import Dict, List
import json

class VisaMastercardAPI:
    """
    A class used to handle Visa and Mastercard API integrations.
    
    Attributes:
    ----------
    api_key : str
        The API key for Visa and Mastercard API access.
    base_url : str
        The base URL for the Visa and Mastercard API.
    """

def __init__(self, api_key: str, base_url: str = "https://api.visa.com"):
        """
        Parameters:
        ----------
        api_key : str
            The API key for Visa and Mastercard API access.
        base_url : str
            The base URL for the Visa and Mastercard API (default is "https://api.visa.com").
        """
        self.api_key = api_key
        self.base_url = base_url

def get_fees(self, card_type: str) -> Dict:
        """
        Retrieves the fees associated with a specific card type.
        
        Parameters:

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