code: def __init__(self, ek: EncryptionKey, raw_ciphertext: tf.Tensor):
      self.ek = ek
      self.raw = _import_maybe_limbs(raw_ciphertext)
  
imports: from typing import Optional
  from typing import Tuple
  import tensorflow
  import tf_big
label_desc: Use image node_id 1 to create a new Ciphertext object  with example: obj = Ciphertext(ek, raw_ciphertext)