public static String getFullIndexName(String indexPrefix, String indexPostfix) {
        String fullIndexName = indexPrefix;
        if (!indexPostfix.isEmpty()) {
            fullIndexName += "_" + indexPostfix;
        }
        return fullIndexName.toLowerCase();
    }
Computes the full index name for an index

@param indexPrefix  the index prefix
@param indexPostfix the index postfix
@return the full index name
common/es/src/main/java/io/apiman/common/es/util/EsIndexMapping.java