Added simple access to integer interval operations

src/main/java/de/cebitec/common/sequencetools/intervals/Intervals.java

@@ -28,6 +28,7 @@ import java.util.List;
 public class Intervals {
 
     public static final Interval<Integer> EMPTY = emptyInterval();
+    public static final IntegerIntervalOperations integerIntervalOperations = new IntegerIntervalOperations();
 
     public static Interval<Integer> emptyInterval() {
         if (EMPTY == null) {
@@ -48,9 +49,8 @@ public class Intervals {
     }
 
     /**
-     * Creates an interval ranging from start to end in zeroOpen coordinates. If
-     * type is not ZeroOpen the start and end positions of the interval will be
-     * transformed to be ZeroOpen.
+     * Creates an interval ranging from start to end in zeroOpen coordinates. If type is not ZeroOpen the start and end
+     * positions of the interval will be transformed to be ZeroOpen.
      *
      * @param start The start of the interval.
      * @param end The end of the interval.
@@ -75,9 +75,9 @@ public class Intervals {
         Interval<Integer> normalized = normalize(interval);
 
         return new SerializableInterval(
-                deNormalizeStart(normalized.getStart(), targetType),
-                deNormalizeEnd(normalized.getEnd(), targetType),
-                targetType);
+            deNormalizeStart(normalized.getStart(), targetType),
+            deNormalizeEnd(normalized.getEnd(), targetType),
+            targetType);
     }
 
     /**
@@ -98,9 +98,12 @@ public class Intervals {
         return new IntervalFormatterBuilder<>();
     }
 
+    public static IntervalOperations<Integer> operations() {
+        return integerIntervalOperations;
+    }
+
     /**
-     * Corrects the start depending on the type so that it can be used with a
-     * java String.
+     * Corrects the start depending on the type so that it can be used with a java String.
      *
      * @param start
      * @param t
@@ -118,8 +121,7 @@ public class Intervals {
     }
 
     /**
-     * Corrects the end depending on the type so that it can be used with a java
-     * String.
+     * Corrects the end depending on the type so that it can be used with a java String.
      *
      * @param end an end position
      * @param t the source type