code: def _gen_chunk_params(
      cls, op: "DataFrameDropDuplicates", input_chunk
  ):
      input_params = input_chunk.params
      inp = op.inputs[0]
      chunk_params = input_params.copy()
      chunk_params["index"] = input_chunk.index[:1] + (0,) * (
          inp.ndim - 1
      )
      chunk_params["shape"] = cls._get_shape(input_params["shape"], op)
      chunk_params["index_value"] = gen_unknown_index_value(
          input_params["index_value"], input_chunk
      )
      if inp.ndim == 2:
          chunk_params["columns_value"] = inp.columns_value
          chunk_params["dtypes"] = inp.dtypes
      else:
          chunk_params["name"] = inp.name
          chunk_params["dtype"] = inp.dtype
      return chunk_params
  
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 6 for calling the DataFrameDropDuplicates obj's underlying member method code with example usage: obj._gen_chunk_params(cls, op, input_chunk) and returns: chunk_params