<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def instantiate_components(self, context):
 """ Instantiate the defined components .. note:: This method requires the iPOPO core service to be registered. This means that the ``pelix.ipopo.core`` must have been declared in the list of bundles (or installed and started programmatically). :param context: A :class:`~pelix.framework.BundleContext` object :raise BundleException: Error looking for the iPOPO service or starting a component """

        with use_ipopo(context) as ipopo:
            for name, (factory, properties) in self.__state.components.items():
                ipopo.instantiate(factory, name, properties)