code: public static String getNameForNew(Element element) {
  		if (element.getKind() != ElementKind.CLASS) {
  			throw new IllegalStateException();
  		}
  		return getNameForNew("", element);
  	}
docs: Returns unqualified class name (e.g. String, if java.lang.String)
  NB: This method requires the given element has the kind of {@link ElementKind#CLASS}.
  @param element
  @return unqualified class name
  @author vvakame