code: def __setattr__(self, attr, value):
      if attr == "params":
          self._chunk.params = value
      else:
          super().__setattr__(attr, value)
  
file_path: mars/mars/core/entity/fuse.py
imports: import numpy
  from ...serialization.serializables import ReferenceField
  from .chunks import ChunkData, Chunk, CHUNK_TYPE
label_desc: Use image node_id 5 for calling the FuseChunkData obj's underlying member method code with example usage: obj.__setattr__(attr, value) without return types