extensions/memory/src/main/java/uk/co/tfd/sm/memory/ehcache/MapCacheImpl.java
@Override
  public void clear() {
    for ( String k : super.keySet() ) {
      Object o = get(k);
      if( o instanceof ThreadBound ) {
        ((ThreadBound) o).unbind();
      }
    }
    super.clear();
  }
@Override
  public void clear() {
    for ( String k : super.keySet() ) {
      Object o = get(k);
      if( o instanceof ThreadBound ) {
        ((ThreadBound) o).unbind();
      }
    }
    super.clear();
  }
{@inheritDoc}
@see java.util.HashMap#clear()