code: def _relu6():
      # refer to src/ATen/native/quantized/cpu/qrelu.cpp
      def _impl(inputs, _):
          assert (
              len(inputs) == 4
          ), "Input quant params not found in op inputs"
          input_scale = inputs[2]
          input_zero_point = inputs[3]
          six = quantize_scalar(6.0, input_scale, input_zero_point)
          return _op.tensor.clip(inputs[0], input_zero_point, six)
  
      return _impl
  
imports: import numpy
  import tvm
  from tvm import relay
  from tvm.relay import expr
  from tvm.relay import op
  from tvm.relay.frontend.common import infer_shape
  from .common import logger
  from .pytorch_utils import is_version_greater_than
label_desc: Use image node_id 30 for calling a global function with example usage: _relu6() and returns: _impl, _op