@Test
public void testGetAllAttributeNames() {

	Collection<String> names = this.container.getAllAttributeNames();
	assertNotNull(names);
	assertEquals(8, names.size());
	assertEpsilonEquals(Arrays.asList(
			"A",  //$NON-NLS-1$
			"B",  //$NON-NLS-1$
			"C",  //$NON-NLS-1$
			"D",  //$NON-NLS-1$
			"E",  //$NON-NLS-1$
			"Z1",  //$NON-NLS-1$
			"Z2",  //$NON-NLS-1$
			"Z3"  //$NON-NLS-1$
			), names);
}