@Override
        public String toString() {
            StringBuilder sb = new StringBuilder();
            sb.append("RegexStateMatcher:")
              .append("\n  wanted:       '").append(pattern.pattern()).append("'")
              .append("\n  last checked: '").append(lastCheckedState).append("'")
              .append("\n  current:      '").append(currentState).append("'");
            return sb.toString();
        }
Returns the given state string with timestamps removed
clustercontroller-core/src/test/java/com/yahoo/vespa/clustercontroller/core/testutils/WaitCondition.java