code: def rewrite_layer_norm(mod):
      """Rewrite the input graph to replace multiple operators with a TVM native layer normalization
      operator so that we can offload them to dnnl layer normalization byoc part.
      """
      mod["main"] = rewrite(LayerNormRewrite(), mod["main"])
      return mod
  
imports: import logging
  from functools import reduce
  import tvm.ir
  from tvm import relay
  from tvm.ir import Op
  from tvm.relay import expr
  from tvm.relay import transform
  from tvm.relay.analysis import analysis
  from tvm.relay.expr import Call, GlobalVar, TupleGetItem, const
  from tvm.relay.expr_functor import ExprMutator, ExprVisitor
  from ...None import _ffi_api
  from ...dataflow_pattern import DFPatternCallback, is_constant, is_expr, is_op, rewrite, wildcard
  from .register import register_pattern_table
label_desc: Use image node_id 28 for calling a global function with example usage: rewrite_layer_norm(mod) and returns: mod