code: def execute(cls, ctx, op):
      inputs = [ctx[inp.key] for inp in op.inputs]
      method_kwargs = op.method_kwargs
  
      # aggregation concat is redirected and `others` is always defined
      assert len(inputs) > 1
  
      method_kwargs["others"] = inputs[1]
      ctx[op.outputs[0].key] = inputs[0].str.cat(**method_kwargs)
  
imports: import inspect
  import numpy
  import pandas
  from ...None import opcodes
  from ...core import OutputType, recursive_tile
  from ...serialization.serializables import KeyField, StringField, TupleField, DictField
  from ...tensor import tensor
  from ...tensor.core import TENSOR_TYPE
  from ...utils import has_unknown_shape
  from ..align import align_series_series
  from ..core import SERIES_TYPE
  from ..initializer import Series
  from ..operands import DataFrameOperand, DataFrameOperandMixin
  from ..utils import build_empty_series, parse_index, infer_index_value
label_desc: Use image node_id 3 for calling the SeriesStringCatHandler obj's underlying member method code with example usage: obj.execute(cls, ctx, op) without return types