code: def list_project_nodes(self, ignore_default_project_node=True):
          
  
          project_nodes = self.find_family("Project")
          return filter(lambda x: x != self.__default_project_node, project_nodes) \
              if ignore_default_project_node else project_nodes
docs: Returns the Model :class:`umbra.components.factory.script_editor.nodes.ProjectNode` class nodes.
  
          :param ignore_default_project_node: Default ProjectNode will be ignored.
          :type ignore_default_project_node: bool
          :return: ProjectNode nodes.
          :rtype: list