canBeInDOM function
Returns true if element type is able to be in DOM.
Implementation
bool canBeInDOM(Object? element) {
if (element == null) return false;
if (element.isNode) {
return true;
} else if (element is UIComponent) {
return true;
} else if (element is UIAsyncContent) {
return true;
} else if (element is List) {
return true;
}
return false;
}