code: def __call__(self, df):
      new_df = build_empty_df(df.dtypes).set_index(
          keys=self.keys,
          drop=self.drop,
          append=self.append,
          verify_integrity=self.verify_integrity,
      )
      return self.new_dataframe(
          [df],
          shape=(df.shape[0], new_df.shape[1]),
          dtypes=new_df.dtypes,
          index_value=parse_index(new_df.index),
          columns_value=parse_index(new_df.columns, store_data=True),
      )
  
imports: import numpy
  import pandas
  from ...None import opcodes
  from ...core import OutputType
  from ...serialization.serializables import AnyField, BoolField
  from ..operands import DataFrameOperand, DataFrameOperandMixin
  from ..utils import build_empty_df, parse_index
label_desc: Use image node_id 6 for calling the DataFrameSetIndex obj's underlying member method code with example usage: obj.__call__(df) and returns: self