@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Index index = (Index) o;
        return prefix == index.prefix &&
               interleavedFeatures == index.interleavedFeatures &&
               Objects.equals(name, index.name) &&
               rankType == index.rankType &&
               Objects.equals(aliases, index.aliases) &&
               stemming == index.stemming &&
               type == index.type &&
               Objects.equals(boolIndex, index.boolIndex) &&
               Objects.equals(hnswIndexParams, index.hnswIndexParams);
    }
Returns a read-only iterator of the aliases (Strings) to this index name
config-model/src/main/java/com/yahoo/schema/Index.java