public interface VisitableMap<K,V> {
/** invokes <tt>ivbc</tt> on each element of this map, passing constant arguments <tt>b</tt> and <tt>c</tt> */
- public <B,C> void invoke(K k, Invokable<V,B,C> ivbc, B b, C c);
+ public <B> void invoke(K k, Invokable<V,B> ivbc, B b);
/** returns true iff this map contains some value <tt>v</tt> for key <tt>k</tt> */
public boolean contains(K k);