code: def get_reduction_callable(cls, op):
      return NuniqueReduction(
          name=cls._func_name,
          axis=op.axis,
          dropna=op.dropna,
          use_arrow_dtype=op.use_arrow_dtype,
          is_gpu=op.is_gpu(),
      )
  
imports: import pandas
  from ...None import opcodes
  from ...core import OutputType
  from ...config import options
  from ...serialization.serializables import BoolField
  from ...utils import lazy_import
  from ..arrays import ArrowListArray, ArrowListDtype
  from .core import DataFrameReductionOperand, DataFrameReductionMixin, CustomReduction
label_desc: Use image node_id 4 for calling the DataFrameNunique obj's underlying member method code with example usage: obj.get_reduction_callable(cls, op) and returns: NuniqueReduction