@Test
public void shouldAllowLettersAsFirstCharacterInName() {

    for (char c = 'a'; c <= 'z'; ++c) {
        assertThat(XmlCharacters.isValidNameStart(c), is(true));
    }
    for (char c = 'A'; c <= 'Z'; ++c) {
        assertThat(XmlCharacters.isValidNameStart(c), is(true));
    }
}