public String readStringNul() {
        return new String(readStringNulByBytes(), charset);
    }
@Test
    void assertReadStringNul() {
        when(byteBuf.bytesBefore((byte) 0)).thenReturn(0);
        assertThat(new MySQLPacketPayload(byteBuf, StandardCharsets.UTF_8).readStringNul(), is(""));
        verify(byteBuf).skipBytes(1);
    }