### Question:
PlanIdentifier { public static boolean isPlan(URI planIdentifier) { return planIdentifier.getSchemeSpecificPart().endsWith(PLAN_FILE_SUFFIX); } private  PlanIdentifier(); static URI parse(String planIdentifier); static URI parse(URI planIdentifier); static boolean isPlan(URI planIdentifier); static boolean isPlan(Path path);  }### Answer:
@Test public void testIsPlanURI() { assertEquals(true,PlanIdentifier.isPlan(URI.create("file: assertEquals(false,PlanIdentifier.isPlan(URI.create("file: }
@Test public void testIsPlanPath() { assertEquals(true,PlanIdentifier.isPlan(Paths.get(URI.create("file: assertEquals(false,PlanIdentifier.isPlan(Paths.get(URI.create("file: }