Add BlockSupplier.andThen(...) with operator-generating Function

Author: tpietzsch

src/main/java/net/imglib2/algorithm/blocks/BlockSupplier.java

@@ -37,6 +37,7 @@
 import static net.imglib2.util.Util.safeInt;
 
 import java.util.Arrays;
+import java.util.function.Function;
 
 import net.imglib2.EuclideanSpace;
 import net.imglib2.Interval;
@@ -146,6 +147,11 @@ default < U extends NativeType< U > > BlockSupplier< U > andThen( UnaryBlockOper
 		return new ConcatenatedBlockSupplier<>( this.independentCopy(), operator.independentCopy() );
 	}
 
+	default < U extends NativeType< U > > BlockSupplier< U > andThen( Function< BlockSupplier< T >, UnaryBlockOperator< T, U > > function )
+	{
+		return new ConcatenatedBlockSupplier<>( this.independentCopy(), function.apply( this ) );
+	}
+
 	/**
 	 * Create a {@code BlockSupplier} accessor for an arbitrary {@code
 	 * RandomAccessible} source. Many View constructions (that ultimately end in