implementation for this pattern "reference_quantized_module":
         a "torch.nn.Module" that represents the reference quantized
         implementation for this pattern's root module.
         "fused_module": a "torch.nn.Module" that represents the fused
         implementation for this pattern "fuser_method": a function
         that specifies how to fuse the pattern for this pattern
         "pattern_complex_format": the pattern specified in the
         reversed nested tuple format (deprecated)
  Return type:
     *BackendPatternConfig*

set_dtype_configs(dtype_configs)
  Set the supported data types passed as arguments to quantize ops
  in the reference model spec, overriding all previously
  registered data types.

  Return type:
     *BackendPatternConfig*

set_fused_module(fused_module)
  Set the module that represents the fused implementation for this
  pattern.

  Return type:
     *BackendPatternConfig*
