@Test
	public void testAddExisting() throws Exception {
		openPrograms(programNames);
		assertEquals(programNames.length, panel.getTabCount());

		panel.addTab(programs[0]);
		assertEquals(programNames.length, panel.getTabCount());
	}
Tests for the plugin that manages the tab for multiple open programs.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/progmgr/MultiTabPluginTest.java