code: def test_region_lower_bound_unfusable():
      var_dom = {
          tvm.tir.Var("i", "int32"): tvm.ir.Range(8),
          tvm.tir.Var("j", "int32"): tvm.ir.Range(4),
      }
      i, j = var_dom
      check_region_bound(
          {(i + j) // 2: (0, 6)}, var_dom, mode="lowerbound"
      )
  
imports: import tvm
  import tvm.testing
  from tvm import te
  from tvm import tir
  from tvm.arith.analyzer import Analyzer
label_desc: Use image node_id 16 for calling a global function with example usage: test_region_lower_bound_unfusable() without return types