OptionalchildrenOptionaliconOverrides the type's icon.
OptionallinesClamps the title to this many lines; without it the title is one line, truncated.
OptionalmenuRendered after the title, in the end rail (e.g., a Card.Menu or a Block rail='end').
The object being depicted; its type's icon (and hue) and label make the header.
Overrides the object's label.