@Override
	public boolean contains(final Object object) {
		return object instanceof Character && contains((Character)object);
	}
Create a new (distinct) CharSeq from the given {@code characters}. The
given {@link CharSequence} is sorted and duplicate values are removed.

@param characters the characters.
@throws NullPointerException if the {@code characters} are {@code null}.
jenetics/src/main/java/io/jenetics/util/CharSeq.java