code: def kernel(self):
      return self._value.kernel
  
imports: from __future__ import print_function
  import autograd.numpy
  import autograd.numpy.random
  from autograd.extend import primitive, defvjp, defjvp, VSpace, Box
  from autograd.util import func
  from autograd import grad
label_desc: Use image node_id 1 for calling the RKHSFunBox obj's underlying member method code with example usage: obj.kernel() and returns: self