Function node_title_bar 

pub fn node_title_bar<'a, Message>(
    title: impl Into<String>,
    style: NodeContentStyle,
) -> Container<'a, Message, Theme, Renderer>
where
    Message: Clone + 'a,

Creates a themed title bar container for nodes.

Built on the library’s node_header, so its rounded top corners match the silhouette the widget renders behind it.