This node takes the attributes of the javafx.scene.control.Tab see javafx.scene.control.Tab.
If the content is a tooltip, the the Tab's tooltip will be set to the Tooltip.
If the content is a graphic, then this Tab's graphic is set to the graphic node.
If the content is a JavaFX node, this Tab's content is set to that node.
Used to create a Tab that is added to a tabPane.