code: def output_limit(self):
      return 2 if self._sample_weight is None else 3
  
file_path: mars/mars/learn/contrib/lightgbm/_align.py
imports: from ....None import opcodes
  from ....core import ExecutableTuple, get_output_types, recursive_tile
  from ....serialization.serializables import AnyField
  from ....utils import has_unknown_shape
  from ...operands import LearnOperand, LearnOperandMixin
label_desc: Use image node_id 6 for calling the LGBMAlign obj's underlying member method code with example usage: obj.output_limit() and returns: unknown