public boolean remove(int key, Object value) {
    int hash = hash(key);
    if (value == null) {
      return false;
    }
    return segmentFor(hash).remove(key, hash, value) != null;
  }
@throws NullPointerException if the specified key is null
geode-core/src/main/java/org/apache/geode/internal/ObjIdConcurrentMap.java