code: def add_user_provided_physical_rules(
      default_rules: List[Rule],
  ) -> List[Rule]:
      """
      Users can provide extra physical optimization rules here
      to be used in `PhysicalOptimizer`.
  
      Args:
          default_rules: the default physical optimization rules.
  
      Returns:
          The final physical optimization rules to be used in `PhysicalOptimizer`.
      """
      return default_rules
  
label_desc: Use image node_id 2 for calling a global function with example usage: add_user_provided_physical_rules(default_rules) and returns: default_rules