code: def post_order_visit(stmt, fvisit):
      """Recursively visit the ir in post DFS order node, apply fvisit
         Each node is guaranteed to be visited only once.
  
      Parameters
      ----------
      fvisit: function
          The visitor function.
      """
      return _ffi_api.PostOrderVisit(stmt, fvisit)
  
imports: from .function import PrimFunc
  from .None import _ffi_api
label_desc: Use image node_id 2 for calling a global function with example usage: post_order_visit(stmt, fvisit) and returns: _ffi_api