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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 validate_count_api(rule_payload, endpoint):
 """ Ensures that the counts api is set correctly in a payload. """

    rule = (rule_payload if isinstance(rule_payload, dict)
            else json.loads(rule_payload))
    bucket = rule.get('bucket')
    counts = set(endpoint.split("/")) & {"counts.json"}
    if len(counts) == 0:
        if bucket is not None:
            msg = ("""There is a count bucket present in your payload,
                   but you are using not using the counts API.
                   Please check your endpoints and try again""")
            logger.error(msg)
            raise ValueError