Separate output and input

Author: ZacSweers

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/SpotlessTask.java

@@ -119,9 +119,19 @@ public void setTarget(Iterable<File> target) {
 
 	/** Internal use only. */
 	@InputFiles
+	@Deprecated
+	public Iterable<File> getInternalTargetInput() {
+		return getInternalTarget();
+	}
+
+	/** Internal use only. */
 	@OutputFiles
 	@Deprecated
-	public Iterable<File> getInternalTarget() {
+	public Iterable<File> getInternalTargetOutput() {
+		return getInternalTarget();
+	}
+
+	private Iterable<File> getInternalTarget() {
 		// used to combine the special cache file and the real target
 		return Iterables.concat(ImmutableList.of(getCacheFile()), target);
 	}