Add missing getType() implementations

Author: tpietzsch

src/main/java/bdv/tools/boundingbox/BoxRealRandomAccessible.java

@@ -103,6 +103,12 @@ public RealRandomAccess< T > realRandomAccess( final RealInterval interval )
 		return new Access();
 	}
 
+	@Override
+	public T getType()
+	{
+		return insideValue;
+	}
+
 	public RealInterval getInterval()
 	{
 		return interval;

src/main/java/bdv/tools/boundingbox/TransformedBoxPlaceHolderSource.java

@@ -131,6 +131,12 @@ public RealRandomAccess< Void > realRandomAccess( final RealInterval interval )
 		{
 			return access;
 		}
+
+		@Override
+		public Void getType()
+		{
+			return null;
+		}
 	};
 
 	private final RealRandomAccess< Void > access = new RealRandomAccess< Void >()

src/main/java/bdv/util/ConstantRandomAccessible.java

@@ -91,4 +91,10 @@ public RandomAccess< T > randomAccess( final Interval interval )
 	{
 		return new ConstantRandomAccess();
 	}
+
+	@Override
+	public T getType()
+	{
+		return constant;
+	}
 }