code: def build_opr_tree_from_pre_order_repr(
      pre_order_repr: tuple,
  ) -> Operator:
      opr_tree = pre_order_repr[0]
      assert isinstance(
          opr_tree, Operator
      ), f"Unknown operator encountered, expected Operator found {type(opr_tree)}"
      # We should not modify the operator in the group
      # expression as it might be used in later rules. Hack:
      # Creating a copy of the match Potential fix: Store only
      # the content in the group expression and manage the
      # parent-child relationship separately. Refer
      # optimizer_context:_xform_opr_to_group_expr
      opr_tree = copy.copy(opr_tree)
      opr_tree.children.clear()
      if len(pre_order_repr) > 1:
          # remove old children
          for child in pre_order_repr[1:]:
              opr_tree.append_child(
                  Binder.build_opr_tree_from_pre_order_repr(child)
              )
      return opr_tree
  
file_path: evadb/evadb/optimizer/binder.py
imports: import copy
  import itertools
  from evadb.optimizer.group_expression import GroupExpression
  from evadb.optimizer.memo import Memo
  from evadb.optimizer.operators import Dummy, Operator, OperatorType
  from evadb.optimizer.rules.pattern import Pattern
label_desc: Use image node_id 4 for calling the Binder obj's underlying member method code with example usage: obj.build_opr_tree_from_pre_order_repr(pre_order_repr) and returns: opr_tree