Add accessor for queue max behind mins

src/main/java/com/hms_networks/americas/sc/extensions/historicaldata/HistoricalDataQueueManager.java

@@ -108,6 +108,15 @@ public static synchronized void setQueueMaxBehindMins(long timeMins) {
  maxQueueGetsBehindMs = SCTimeUnit.MINUTES.toMillis(timeMins);
  }
 
+ /**
+ * Get the maximum amount the Historical FIFO queue can get behind in minutes.
+ *
+ * @return maximum amount the Historical FIFO queue can get behind in minutes
+ */
+ public static synchronized long getQueueMaxBehindMins() {
+ return SCTimeUnit.MILLISECONDS.toMinutes(maxQueueGetsBehindMs);
+ }
+
  /**
  * Convert a <code>long</code> time value to format required for EDB calls.
  *