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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 abilities(api_key=None, add_headers=None):
 """Fetch a list of permission-like strings for this account."""

    client = ClientMixin(api_key=api_key)
    result = client.request('GET', endpoint='abilities',
                            add_headers=add_headers,)
    return result['abilities']