package innovimax.mixthem.operation;

import innovimax.mixthem.MixException;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;

public interface IOperation {
  void processFiles(File file1, File file2, OutputStream out) throws MixException, IOException;
}

@@ -92,16 +92,44 @@
 o.File;%0A
+import java.io.InputStream;%0A
 import j
@@ -304,10 +304,122 @@
 eption;%0A
+  void processFiles(InputStream input1, InputStream input2, OutputStream out) throws MixException, IOException;%0A
 %7D%0A

Update IOperation.java