guava/src/com/google/common/collect/ForwardingMultiset.java
protected boolean standardSetCount(E element, int oldCount, int newCount) {
    return Multisets.setCountImpl(this, element, oldCount, newCount);
  }
protected boolean standardSetCount(E element, int oldCount, int newCount) {
    return Multisets.setCountImpl(this, element, oldCount, newCount);
  }
A sensible definition of {@link #setCount(Object, int, int)} in terms of {@link #count(Object)}
and {@link #setCount(Object, int)}. If you override either of these methods, you may wish to
override {@link #setCount(Object, int, int)} to forward to this implementation.

@since 7.0