code: def time_shift(self, size, soltype):
      if soltype == "fft":
          shift(self.f, self.a)
      else:
          direct_shift(self.f, self.a)
  
file_path: scipy/benchmarks/benchmarks/fftpack_pseudo_diffs.py
imports: from numpy import arange, sin, cos, pi, exp, tanh, sign
  from .common import Benchmark, safe_import
label_desc: Use image node_id 5 for calling the Bench obj's underlying member method code with example usage: obj.time_shift(size, soltype) without return types