public boolean isVisibleTab(T value) {
		for (GTab<T> gTab : allTabs) {
			if (gTab.getValue().equals(value)) {
				return true;
			}
		}
		return false;
	}
Returns true if the tab for the given value is visible on the tab panel.
@param value the value to test if visible
@return true if the tab for the given value is visible on the tab panel
Ghidra/Framework/Docking/src/main/java/docking/widgets/tab/GTabPanel.java