code: def setup(self):
      self.a = get_squares_()["float64"]
      self.b = get_indexes_rand()[:100].astype(np.float64)
  
imports: from .common import Benchmark, get_squares_, get_indexes_rand, TYPES1
  import numpy
label_desc: Use image node_id 1 for calling the Lstsq obj's underlying member method code with example usage: obj.setup() without return types