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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 incoming_references(self, client=None, query={}):
 """Fetches all entries referencing the entry API Reference: https://www.contentful.com/developers/docs/references/content-delivery-api/#/reference/search-parameters/links-to-asset :param client Client instance :param query: (optional) Dict with API options. :return: List of :class:`Entry <contentful.entry.Entry>` objects. :rtype: List of contentful.entry.Entry Usage: [<Entry[cat] id='happycat'>] """


        if client is None:
            return False

        query.update({'links_to_entry': self.id})
        return client.entries(query)