code: def _get_kern():
      global _kern
      if _kern is None:
          _kern = cuda.elementwise(
              "T cond, T x, T slope",
              "T y",
              "y = cond <= 0 ? (T)(slope * x) : x",
              "lrelu",
          )
      return _kern
  
imports: from chainer.backends import cuda
  from chainer.backends import intel64
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling a global function with example usage: _get_kern() and returns: _kern