in modules/core/src/main/java/org/apache/fluo/recipes/core/map/CollisionFreeMap.java [304:315]
public Options(String mapId, String combinerType, String updateObserverType, String keyType,
String valueType, int buckets) {
Preconditions.checkArgument(buckets > 0);
Preconditions.checkArgument(!mapId.contains(":"), "Map id cannot contain ':'");
this.mapId = mapId;
this.numBuckets = buckets;
this.combinerType = combinerType;
this.updateObserverType = updateObserverType;
this.keyType = keyType;
this.valueType = valueType;
}