code: def from_raw(self, robj: RawObject) -> RootNode:
          
          cooked = self.schema.from_raw(robj)
          return RootNode(cooked, self.schema, cooked.timestamp)
docs: Create an instance node from a raw data tree.
  
          Args:
              robj: Dictionary representing a raw data tree.
  
          Returns:
              Root instance node.