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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 list_ipsec_site_connections(self, retrieve_all=True, **_params):
 """Fetches all configured IPsecSiteConnections for a project."""

        return self.list('ipsec_site_connections',
                         self.ipsec_site_connections_path,
                         retrieve_all,
                         **_params)