code: def _run(self, x, alpha=None, gamma=None):  # type: ignore
      return (
          (
              np.where(x > 0, x, np.exp(x) * alpha - alpha) * gamma
          ).astype(x.dtype),
      )
  
imports: import numpy
  from onnx.reference.op_run import OpRun
label_desc: Use image node_id 1 for calling the Selu obj's underlying member method code with example usage: obj._run(x, alpha, gamma) and returns: unknown