Client mockedClient = createMock(Client.class);

expect(mockedClient.getAccount()).andReturn(resourceGenerate.anUser());
expect(mockedClient.getLanguages()).andReturn(resourceGenerate.aLanguageCollection());
replay(mockedClient);

Field field = framework.getClass().getDeclaredField("client");
field.setAccessible(true);
field.set(framework, mockedClient);