Currently, the only right way to use generated artifact as input for another product is "usings" property in the rule of dependent product. This approach have disadvantages:

• one need to modify rule to add new using tags for Rule, which results in "usings" property, containing all possible tags
• it doesn't work for transformers

There should be a more flexible approach:

• don't use "usings" at all, so any dependencies artifacts is added to files list of dependent product
• use some boolean property inside Depends item(e.g. "usings"), that add dependencies artifacts to files list of dependent product