code: def _execute_subset_tree_post(cls, ctx, op):
      inp = ctx[op.input.key]
      out = op.outputs[0]
      idx = op.outputs[0].index[0]
      subset = ctx[op.subset_chunk.key]
      selected = subset[subset["_chunk_index_"] == idx]["_i_"]
      ret = inp.iloc[selected]
      if op.ignore_index:
          prev_size = (subset["_chunk_index_"] < out.index[0]).sum()
          ret.index = pd.RangeIndex(prev_size, prev_size + len(ret))
      ctx[op.outputs[0].key] = ret
  
imports: import numpy
  import pandas
  from ...None import opcodes
  from ...core.operand import OperandStage
  from ...serialization.serializables import BoolField
  from ...utils import lazy_import, calc_nsplits
  from ..operands import OutputType
  from ..utils import parse_index, hash_dataframe_on, gen_unknown_index_value, standardize_range_index
  from ._duplicate import DuplicateOperand, validate_subset
label_desc: Use image node_id 10 for calling the DataFrameDropDuplicates obj's underlying member method code with example usage: obj._execute_subset_tree_post(cls, ctx, op) without return types