code: def __init__(self, id, original):
      self.id = id
      self.original = original
  
imports: import abc
  import json
  from ..typecheck import typecheck_method, sequenceof
  from ..utils.misc import escape_str
label_desc: Use image node_id 1 to create a new BlockMatrixPersistReader object from inherited base classes: BlockMatrixReader with example: obj = BlockMatrixPersistReader(id, original)