code: def object_merge(old, new, unique=False):
      
      if isinstance(old, list) and isinstance(new, list):
          if old == new:
              return
          for item in old[::-1]:
              if unique and item in new:
                  continue
              new.insert(0, item)
      if isinstance(old, dict) and isinstance(new, dict):
          for key, value in old.items():
              if key not in new:
                  new[key] = value
              else:
                  object_merge(value, new[key])
docs: Recursively merge two data structures.
  
      :param unique: When set to True existing list items are not set.