@Test
	public void testGetLast() {
		assertEquals(20, (int) graphPath.getLast());
	}
Test to verify if getLast() function works correctly. At setUp() a GraphPath is created
containing 21 vertices, with the last vertex having integer 20. Assert checks if getLast()
function returns 20, since it is the last vertex in the GraphPath.
Ghidra/Framework/Graph/src/test.slow/java/ghidra/graph/GraphPathTest.java