@Test public void test_get_pluginClasses_cant_be_null() { assertThat(underTest.getPluginClasses()).isNotNull(); }
Collection<Class<? extends Plugin>> getPluginClasses() { return pluginsByClass.keySet(); }
PluginRegistry { Collection<Class<? extends Plugin>> getPluginClasses() { return pluginsByClass.keySet(); } }
PluginRegistry { Collection<Class<? extends Plugin>> getPluginClasses() { return pluginsByClass.keySet(); }  }
PluginRegistry { Collection<Class<? extends Plugin>> getPluginClasses() { return pluginsByClass.keySet(); }  Map<String, Plugin> getPluginsByName(); }
PluginRegistry { Collection<Class<? extends Plugin>> getPluginClasses() { return pluginsByClass.keySet(); }  Map<String, Plugin> getPluginsByName();  }