code: def tile(cls, op):
      in_obj = op.inputs[0]
      out_obj = op.outputs[0]
      axis = op.axis or 0
  
      if in_obj.chunk_shape[axis] > 1:
          shifted = yield from recursive_tile(
              DataFrameShift(periods=op.periods, axis=axis)(in_obj)
          )
          shift_chunks = shifted.chunks
      else:
          shift_chunks = itertools.repeat(None)
  
      chunks = []
      bool_columns_dict = dict()
      for in_chunk, shift_chunk in zip(in_obj.chunks, shift_chunks):
          params = in_chunk.params.copy()
          if in_chunk.ndim == 2:
              params["dtypes"] = out_obj.dtypes[in_chunk.dtypes.index]
              try:
                  bool_columns = bool_columns_dict[in_chunk.index[1]]
              except KeyError:
                  bool_columns = bool_columns_dict[
                      in_chunk.index[1]
                  ] = [
                      col
                      for col, dt in in_chunk.dtypes.items()
                      if dt == np.dtype(bool)
                  ]
          else:
              params["dtype"] = out_obj.dtype
              bool_columns = in_chunk.dtype == np.dtype(bool)
  
          new_op = op.copy().reset_key()
          new_op._bool_columns = bool_columns
  
          if shift_chunk is None:
              chunks.append(new_op.new_chunk([in_chunk], **params))
          else:
              chunks.append(
                  new_op.new_chunk([in_chunk, shift_chunk], **params)
              )
  
      new_op = op.copy().reset_key()
      return new_op.new_tileables(
          [in_obj],
          chunks=chunks,
          nsplits=in_obj.nsplits,
          **out_obj.params,
      )
  
imports: import itertools
  import numpy
  from ...None import opcodes
  from ...core import recursive_tile
  from ...serialization.serializables import AnyField, Int8Field, Int64Field
  from ..core import DATAFRAME_TYPE, OutputType
  from ..operands import DataFrameOperand, DataFrameOperandMixin
  from ..utils import build_empty_df, build_empty_series, validate_axis
  from .shift import DataFrameShift
label_desc: Use image node_id 6 for calling the DataFrameDiff obj's underlying member method code with example usage: obj.tile(cls, op) and returns: new_op