public void setHeader(Header header) {
        this.header = header;
    }
@Test
    void testSetHeader() {
        HttpRestResult<String> result = new HttpRestResult<>();
        result.setData("test data");
        Header header = Header.newInstance();
        result.setHeader(header);
        assertEquals(header, result.getHeader());
        assertEquals("test data", result.getData());
    }