code: def forward_xp(self, inputs, xp):
      x, t = inputs
      if xp is chainerx:
          out = xp.huber_loss(x, t, self.delta)
      else:
          out = xp.huber_loss(x, t, self.delta, reduce="no")
      return (out,)
  
imports: import numpy
  import chainer
  from chainer import functions
  import chainerx
  from chainerx_tests import dtype_utils
  from chainerx_tests import op_utils
label_desc: Use image node_id 2 for calling the TestHuberLoss obj's underlying member method code with example usage: obj.forward_xp(inputs, xp) and returns: out