in src/main/groovy/com/epam/esp/elasticsearch/comparator/TimestampIndexNameComparator.groovy [45:54]
private boolean compatibilityCheck(String o1, String o2) {
int d1 = o1.lastIndexOf(delimiter)
int d2 = o2.lastIndexOf(delimiter)
if (d1 > 0 && d2 > 0) {
return o1.substring(0, d1).equals(o2.substring(0, d2))
} else {
return false
}
}