code: def drop(self):
      return self._drop
  
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 3 for calling the DataFrameSetIndex obj's underlying member method code with example usage: obj.drop() and returns: self