@Test
public void placeholderShouldReturnACRestBuilderWithPlaceholderSet(){

    CRestBuilder expected = mock(CRestBuilder.class);
    when(builder.placeholder("n","v")).thenReturn(expected);
    assertSame(expected, CRest.placeholder("n", "v"));
    verify(builder).placeholder("n", "v");
    verifyNoMoreInteractions(builder);
}