- <groupId>org.slf4j</groupId>
- <artifactId>com.springsource.slf4j.org.apache.commons.logging</artifactId>
+ <groupId>org.argeo.tp</groupId>
+ <artifactId>slf4j.org.apache.commons.logging</artifactId>
+ </dependency>
+
+ <dependency>
+ <groupId>org.argeo.tp</groupId>
+ <artifactId>org.apache.log4j</artifactId>
+ <optional>true</optional>