code: def simplify_qnn_concat(mod, _=None):
      for global_var in mod.functions.keys():
          mod[global_var] = rewrite(
              simplify_qnn_concat_in_func(), mod[global_var]
          )
      return mod
  
imports: import functools
  import numpy
  import tvm
  from tvm import relay
  from tvm.relay.dataflow_pattern import DFPatternCallback, is_constant, is_op, is_tuple, rewrite, wildcard
  from tvm.topi.utils import get_const_tuple
  from tvm.relay.expr import Call
  from tvm.runtime import ndarray
  from ..._ffi.registry import register_func
label_desc: Use image node_id 7 for calling a global function with example usage: simplify_qnn_concat(mod, _) and returns: mod