class_docstr: Flattening preserves axis separators.
class_docstr_tok: ["Flattening","preserves","axis","separators","."]
code: def before():
      A = T.alloc_buffer([32, 32], axis_separators=[1])
      for i, j in T.grid(32, 32):
          T.evaluate(A[i, j])
  
imports: import tvm
  import tvm.testing
  from tvm import te
  from tvm.script import tir
label_desc: Use image node_id 1 for calling the TestNoChangeTo2DPhysicalBuffer obj's underlying member method code with example usage: obj.before() without return types