@Override
    public boolean contains(CharSequence name) {
        return get(name) != null;
    }
@Test
    public void testContainsName() {
        Http2Headers headers = newClientHeaders();
        assertTrue(headers.contains("Name1"));
        assertTrue(headers.contains(Http2Headers.PseudoHeaderName.PATH.value()));
        assertFalse(headers.contains(Http2Headers.PseudoHeaderName.STATUS.value()));
        assertFalse(headers.contains("a missing header"));
    }