code: def params(self) -> Dict[str, Any]:
      # params return the properties which useful to rebuild a new chunk
      return {
          "index": self.index,
      }
  
imports: from typing import Any, Dict
  from ...serialization.serializables import FieldTypes, ListField
  from .chunks import ChunkData, Chunk
  from .core import Entity
  from .executable import _ToObjectMixin
  from .tileables import TileableData
label_desc: Use image node_id 2 for calling the ObjectChunkData obj's underlying member method code with example usage: obj.params() and returns: dict