### Question:
Grammars extends WadlElement { @Override public String toString() { final StringBuilder sb = new StringBuilder(); sb.append("{"); sb.append("includes").append(" : ").append(includes); sb.append(", "); sb.append("doc").append(" : ").append(getDocumentation()); sb.append("}"); return sb.toString(); } Grammars(final List<Documentation> doc, final List<Include> includes); List<Include> getIncludes(); @Override String toString();  }### Answer:
@Test public void testToString() { assertTrue(!"".equals(grammars.toString())); }