@@ -0,0 +1,304 @@
+package org.davidmoten.rx.jdbc;%0D%0A%0D%0Aimport java.sql.Connection;%0D%0A%0D%0Apublic interface Tx%3CT%3E %7B%0D%0A    %0D%0A    boolean isValue();%0D%0A%0D%0A    boolean isComplete();%0D%0A%0D%0A    boolean isError();%0D%0A%0D%0A    T value();%0D%0A%0D%0A    Throwable throwable();%0D%0A%0D%0A    Connection connection();%0D%0A%0D%0A    void commit();%0D%0A%0D%0A    void rollback();%0D%0A%7D

add Tx