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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def customer_gateway_exists(customer_gateway_id=None, customer_gateway_name=None,
                            region=None, key=None, keyid=None, profile=None):
    '''
    Given a customer gateway ID, check if the customer gateway ID exists.

    Returns True if the customer gateway ID exists; Returns False otherwise.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_vpc.customer_gateway_exists cgw-b6a247df
        salt myminion boto_vpc.customer_gateway_exists customer_gatway_name=mycgw

    '''

    return resource_exists('customer_gateway', name=customer_gateway_name,
                           resource_id=customer_gateway_id,
                           region=region, key=key, keyid=keyid, profile=profile)