code: def _leaky_relu(x: np.ndarray, alpha: float) -> np.ndarray:
      sign = (x > 0).astype(x.dtype)
      sign -= ((sign - 1) * alpha).astype(x.dtype)
      return x * sign
  
imports: import numpy
  from onnx.reference.ops._op import OpRunUnaryNum
label_desc: Use image node_id 1 for calling a global function with example usage: _leaky_relu(x, alpha) and returns: unknown