getFileRef実装

source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java

@@ -68,8 +68,12 @@ public class FileManagerImpl implements FileManager {
 
     @Override
     public File getFileRef() {
+        if (this.isExist()) {
+            return this.path.toFile();
+        } else {
             return null;
         }
+    }
 
     @Override
     public boolean isExist() {