@Override
    public T setInt(K name, int value) {
        throw new UnsupportedOperationException("read only");
    }
@Test
    public void testSetInt() {
        assertThrows(UnsupportedOperationException.class, new Executable() {
            @Override
            public void execute() {
                HEADERS.setInt("name", 0);
            }
        });
    }