def describe_connection_loa(connectionId=None, providerName=None,
    loaContentType=None):
    """
    Deprecated in favor of  DescribeLoa .
    Returns the LOA-CFA for a Connection.
    The Letter of Authorization - Connecting Facility Assignment (LOA-CFA) is a document that your APN partner or service provider uses when establishing your cross connect to AWS at the colocation facility. For more information, see Requesting Cross Connects at AWS Direct Connect Locations in the AWS Direct Connect user guide.
    See also: AWS API Documentation
    
    
    :example: response = client.describe_connection_loa(
        connectionId='string',
        providerName='string',
        loaContentType='application/pdf'
    )
    
    
    :type connectionId: string
    :param connectionId: [REQUIRED]
            The ID of the connection. This field is also used as the ID type for operations that use multiple connection types (LAG, interconnect, and/or connection).
            Example: dxcon-fg5678gh
            Default: None
            

    :type providerName: string
    :param providerName: The name of the APN partner or service provider who establishes connectivity on your behalf. If you supply this parameter, the LOA-CFA lists the provider name alongside your company name as the requester of the cross connect.
            Default: None
            

    :type loaContentType: string
    :param loaContentType: A standard media type indicating the content type of the LOA-CFA document. Currently, the only supported value is 'application/pdf'.
            Default: application/pdf
            

    :rtype: dict
    :return: {
        'loa': {
            'loaContent': b'bytes',
            'loaContentType': 'application/pdf'
        }
    }
    
    
    """
    pass
