@Test(expected = IllegalStateException.class)
 public void testPluginChecksSameMimesNegative() {
   BasePlugin bp1 = createBasePlugin("/f1");
   BasePlugin bp2 = createBasePlugin(HttpTools.MimeType.APP_OCTET, "/f2");
   AggregateMimePlugin aggregateMimePlugin = new AggregateMimePlugin(bp1, bp2);
   assertEquals(HttpTools.MimeType.APP_JSON, aggregateMimePlugin.mimeType());
 }
 @Test
 public void testPluginChecksSameMimesPositive() {
   BasePlugin bp1 = createBasePlugin("/f1");
   BasePlugin bp2 = createBasePlugin("/f2");
   AggregateMimePlugin aggregateMimePlugin = new AggregateMimePlugin(bp1, bp2);
   assertEquals(HttpTools.MimeType.APP_JSON, aggregateMimePlugin.mimeType());
 }