code: def tile(cls, op):
      in_groupby = op.inputs[0]
      out_df = op.outputs[0]
  
      chunks = []
      if op.output_types[0] == OutputType.dataframe:
          chunk_shape = (
              np.nan,
              len(out_df.dtypes)
              if out_df.dtypes is not None
              else np.nan,
          )
      else:
          chunk_shape = (np.nan,)
      for c in in_groupby.chunks:
          inp_chunks = [c]
  
          new_op = op.copy().reset_key()
          new_op.tileable_op_key = op.key
          if op.output_types[0] == OutputType.dataframe:
              new_index = c.index if c.ndim == 2 else c.index + (0,)
              chunks.append(
                  new_op.new_chunk(
                      inp_chunks,
                      index=new_index,
                      shape=chunk_shape,
                      dtypes=out_df.dtypes,
                      columns_value=out_df.columns_value,
                      index_value=out_df.index_value,
                  )
              )
          else:
              chunks.append(
                  new_op.new_chunk(
                      inp_chunks,
                      name=out_df.name,
                      index=(c.index[0],),
                      shape=chunk_shape,
                      dtype=out_df.dtype,
                      index_value=out_df.index_value,
                  )
              )
  
      new_op = op.copy()
      kw = out_df.params.copy()
      kw["chunks"] = chunks
      if op.output_types[0] == OutputType.dataframe:
          kw["nsplits"] = (
              (np.nan,) * len(chunks),
              (
                  len(out_df.dtypes)
                  if out_df.dtypes is not None
                  else np.nan,
              ),
          )
      else:
          kw["nsplits"] = ((np.nan,) * len(chunks),)
      return new_op.new_tileables([in_groupby], **kw)
  
imports: import numpy
  import pandas
  from ...None import opcodes
  from ...core import OutputType
  from ...core.custom_log import redirect_custom_log
  from ...serialization.serializables import BoolField, TupleField, DictField, AnyField
  from ...utils import enter_current_session, quiet_stdio
  from ..operands import DataFrameOperandMixin, DataFrameOperand
  from ..utils import build_empty_df, build_empty_series, parse_index
label_desc: Use image node_id 8 for calling the GroupByTransform obj's underlying member method code with example usage: obj.tile(cls, op) and returns: new_op