code: def time_loadnpy_overhead(self):
      self.buffer.seek(0, SEEK_SET)
      np.load(self.buffer)
  
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 LoadNpyOverhead obj's underlying member method code with example usage: obj.time_loadnpy_overhead() without return types