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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 _apply_section_children(self, section, hosts):
 """ Add the variables for each entry in a 'children' section to the hosts belonging to that entry. """

        for entry in section['entries']:
            for hostname in self._group_get_hostnames(entry['name']):
                host = hosts[hostname]
                for var_key, var_val in entry['hostvars'].items():
                    host['hostvars'][var_key] = var_val