def __init__(self, instance, field, name):
        easy_thumbnails_files.Thumbnailer.__init__(self, None, name)
        self.instance = instance
        self.field = field
        self._committed = True
        self.storages = self.field.storages
        self.thumbnail_storages = self.field.thumbnail_storages
        self.thumbnail_options = self.field.thumbnail_options
        self.storage = self._storage
        self.source_storage = self._source_storage
        self.thumbnail_storage = self._thumbnail_storage
        self.thumbnail_basedir = self._thumbnail_base_dir
:param metadata: information needed to deserialize xml into
dataset/ETHPy150Open divio/django-filer/filer/fields/multistorage_file.py/MultiStorageFieldFile.__init__--crossover with--dataset/ETHPy150Open nii-cloud/dodai-compute/nova/api/openstack/wsgi.py/XMLDeserializer.__init__