code: def test_interatomic_l2_distance():
      N_atoms = 10
      M_nbrs = 15
      ndim = 20
  
      layer = dc.models.layers.InteratomicL2Distances(
          N_atoms=N_atoms, M_nbrs=M_nbrs, ndim=ndim
      )
      config = layer.get_config()
      layer_copied = (
          dc.models.layers.InteratomicL2Distances.from_config(config)
      )
  
      assert layer_copied.N_atoms == layer.N_atoms
      assert layer_copied.M_nbrs == layer.M_nbrs
      assert layer_copied.ndim == layer.ndim
  
imports: import deepchem
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_interatomic_l2_distance() without return types