def bind(self, element: Element) -> None:
"""
Bind an already created element to the element factory.
The element may not be bound to another factory already.
"""
if hasattr(element, "_model") and element._model:
raise AttributeError("element is already bound")
if not isinstance(element.id, str):
raise AttributeError(
f"Element should contain a string id (found: {element.id}")
if self._elements.get(element.id):
raise AttributeError("an element already exists with the same id")
element._model = self
self._elements[element.id] = element
def unlink(self):
self.is_unlinked = True
Element.unlink()
def unlink(self):
self.is_unlinked = True
Element.unlink(self)
