code: def _execute_map(cls, ctx, op):
      input_data = ctx[op.inputs[0].key]
      limit = op.limit
      axis = op.axis
      method = op.method
  
      filled = input_data.fillna(
          method=method, axis=axis, limit=limit, downcast=op.downcast
      )
      ctx[op.outputs[0].key] = cls._get_first_slice(op, filled, 1)
      del filled
  
imports: import itertools
  import numpy
  import pandas
  from ...None import opcodes
  from ...config import options
  from ...core import ENTITY_TYPE, Entity, OutputType, get_output_types
  from ...core.operand import OperandStage
  from ...serialization.serializables import StringField, AnyField, BoolField, Int64Field
  from ..align import align_dataframe_dataframe, align_dataframe_series, align_series_series
  from ..core import DATAFRAME_TYPE, SERIES_TYPE
  from ..operands import DataFrameOperandMixin, DataFrameOperand
  from ..utils import validate_axis
label_desc: Use image node_id 11 for calling the FillNA obj's underlying member method code with example usage: obj._execute_map(cls, ctx, op) without return types