public static ReadOnlyHttp2Headers trailers(boolean validateHeaders, AsciiString... otherHeaders) {
        return new ReadOnlyHttp2Headers(validateHeaders, EMPTY_ASCII_STRINGS, otherHeaders);
    }
@Test
    public void pseudoHeaderNotAllowedAfterNonPseudoHeaders() {
        assertThrows(IllegalArgumentException.class, new Executable() {
            @Override
            public void execute() {
                ReadOnlyHttp2Headers.trailers(true, new AsciiString(":scheme"), new AsciiString("foo"),
                        new AsciiString("othername"), new AsciiString("goo"),
                        new AsciiString(":path"), new AsciiString("val"));
            }
        });
    }