code: def get_nodes_by_qualified_name(self, graph, qualified_name_selector):
          
          qualified_name = qualified_name_selector.split(".")
          package_names = get_package_names(graph)
          for node, real_node in self.parsed_nodes(graph):
              if _node_is_match(qualified_name, package_names, real_node.fqn):
                  yield node
docs: Yield all nodes in the graph that match the qualified_name_selector.
  
          :param str qualified_name_selector: The selector or node name