### Question:
AbstractRange implements Range<C, R> { @Override public String toString() { return "[" + start.toString() + ".." + end.toString() + "]"; } protected  AbstractRange(C start, C end); @Override C start(); @Override C end(); @Override boolean contains(R other); @Override boolean contains(C value); @Override boolean overlaps(R other); @Override boolean isConsecutive(R other); @Override boolean isEmpty(); @Override R merge(R other); @Override R intersection(R other); @SuppressWarnings({"unchecked"}) @Override List<R> exclude(R other); @Override boolean isSameRange(R other); @Override String toString(); @Override Iterator<C> iterator(); @Override final boolean equals(Object o); @Override final int hashCode();  }### Answer:
@Test public abstract void testToString();