@@ -0,0 +1,145 @@
+package io.sigpipe.sing.query;%0A%0Apublic class RelationalQuery %7B%0A%0A    public RelationalQuery() %7B%0A%0A    %7D%0A%0A    public void addOperator() %7B %0A%0A    %7D%0A%7D%0A

Add stub class for representing relational queries