code: def time_mmap_slicing(self):
      for i in range(1000):
          self.fp[5:10]
  
imports: from .common import Benchmark, get_square_, get_indexes_, get_indexes_rand_, TYPES1
  from os.path import join
  import shutil
  from numpy import memmap, float32, array
  import numpy
  from tempfile import mkdtemp
label_desc: Use image node_id 3 for calling the IndexingSeparate obj's underlying member method code with example usage: obj.time_mmap_slicing() without return types