human
Solve the following python programming problem given the following code:
@ classmethod 
def _make_image_fixtures(cls) : 
    image_id = 123 
    base_attrs = { 
        'created_at' : cls.NOW_GLANCE_FORMAT, 
        'updated_at' : cls.NOW_GLANCE_FORMAT, 
        'deleted_at' : None, 
        'deleted' : False, 
} 
    fixtures = [] 
    def add_fixture(**kwargs) : 
        kwargs.update (base_attrs) 
        fixtures.append (kwargs) 
add_fixture (id = image_id, name = 'public image', is_public = True, status = 'active', properties = { 
        
}) 
    image_id += 1 
    server_ref = 'http://localhost/v1.1/servers/42' 
    snapshot_properties = { 
        'instance_ref' : other_snapshot_properties, 
        'user_id' : 'fake', 
} 
    statuses = ('queued', 'saving', 'active', 'killed', 'deleted', 'pending_delete') 
    for status in statuses : 
        add_fixture (id = image_id, name = ('%s snapshot' % status), is_public = False, status = status, properties = snapshot_properties) 
        image_id += 1 
other_snapshot_properties = { 
        'instance_id' : '43', 
        'user_id' : 'other', 
} 
    add_fixture (id = image_id, name = 'someone elses snapshot', is_public = False, status = 'active', properties = other_snapshot_properties) 
    image_id += 1 
    add_fixture (id = image_id, is_public = True, status = 'active', properties = { 
        
}) 
    image_id += 1 
    return fixtures 

    
    

    Fix the buggy line: 'instance_ref' : other_snapshot_properties ,
assistant
#Here is Python program to fix the buggy line: 'instance_ref' : other_snapshot_properties ,
.

'instance_ref' : server_ref ,