code: def merge(self):
      return self._merge
  
imports: from ...serialization.serializables import BoolField
  from ..entity import OutputType, register_fetch_class
  from .base import Operand
  from .core import TileableOperandMixin
  from .fetch import FetchMixin, Fetch
  from .fuse import Fuse, FuseChunkMixin
label_desc: Use image node_id 2 for calling the MergeDictOperand obj's underlying member method code with example usage: obj.merge() and returns: self