### Question:
HtmlLanguageBuilder { public HtmlLanguageBuilder setXhtmlStrict(boolean xhtmlStrict) { this.xhtmlStrict = xhtmlStrict; return this; } HtmlLanguageBuilder(); HtmlLanguageBuilder name(String name); HtmlLanguageBuilder add(BlockType blockType); HtmlLanguageBuilder add(SpanType spanType); HtmlLanguageBuilder addSubstitution(SpanType spanType, String alternativeTagName); HtmlLanguageBuilder addHeadings(int level); HtmlLanguageBuilder addSpanFont(); HtmlLanguageBuilder setXhtmlStrict(boolean xhtmlStrict); HtmlLanguageBuilder document(String prefix, String suffix); HtmlLanguage create();  }### Answer:
@Test public void setXhtmlStrict() { assertXhtmlStrict(true); assertXhtmlStrict(false); }