human
Solve the following python programming problem given the following code:
def _test_index_json(self, tenant_id = None) : 
    request = self._get_index_request (tenant_id = tenant_id) 
    context = request.environ ['nova.context'] 
    if (tenant_id is None) : 
        tenant_id = _get_project_quotas.project_id 
request = self._populate_limits (request) 
    self.absolute_limits = { 
        'ram' : 512, 
        'instances' : 5, 
        'cores' : 21, 
        'key_pairs' : 10, 
        'floating_ips' : 10, 
        'security_groups' : 10, 
        'security_group_rules' : 20, 
} 
    expected = { 
        'limits' : { 
            'rate' : [{ 
                'regex' : '.*', 
                'uri' : '*', 
                'limit' : [{ 
                    'verb' : 'GET', 
                    'next-available' : '1970-01-01T00:00:00Z', 
                    'unit' : 'MINUTE', 
                    'value' : 10, 
                    'remaining' : 10, 
}, { 
                    'verb' : 'POST', 
                    'next-available' : '1970-01-01T00:00:00Z', 
                    'unit' : 'HOUR', 
                    'value' : 5, 
                    'remaining' : 5, 
}], 
}, { 
                'regex' : 'changes-since', 
                'uri' : 'changes-since*', 
                'limit' : [{ 
                    'verb' : 'GET', 
                    'next-available' : '1970-01-01T00:00:00Z', 
                    'unit' : 'MINUTE', 
                    'value' : 5, 
                    'remaining' : 5, 
}], 
}], 
            'absolute' : { 
                'maxTotalRAMSize' : 512, 
                'maxTotalInstances' : 5, 
                'maxTotalCores' : 21, 
                'maxTotalKeypairs' : 10, 
                'maxTotalFloatingIps' : 10, 
                'maxSecurityGroups' : 10, 
                'maxSecurityGroupRules' : 20, 
}, 
}, 
} 
    def _get_project_quotas(context, project_id, usages = True) : 
        return { k : dict (limit = v) for (k, v) in self.absolute_limits.items () } 
with mock.patch ('nova.quota.QUOTAS.get_project_quotas') as get_project_quotas : 
       ...

    
    

    Fix the buggy line: tenant_id = _get_project_quotas.project_id
assistant
#Here is Python program to fix the buggy line: tenant_id = _get_project_quotas.

tenant_id = context.project_id