src/test/java/org/embulk/input/mysql/EmptyConfigSource.java in embulk-input-mysql-0.5.0 vs src/test/java/org/embulk/input/mysql/EmptyConfigSource.java in embulk-input-mysql-0.6.0

@@ -95,6 +95,11 @@
     public ConfigSource setNested(String s, DataSource datasource)
     {
         return null;
     }
 
+    @Override
+    public ConfigSource remove(String arg0) {
+        return null;
+    }
+
 }