code: def time_vb_savez_squares(self):
      np.savez("tmp.npz", **self.squares)
  
imports: from .common import Benchmark, get_squares, get_squares_
  import numpy
  from io import SEEK_SET, StringIO, BytesIO
label_desc: Use image node_id 2 for calling the Savez obj's underlying member method code with example usage: obj.time_vb_savez_squares() without return types