This transform generates the DITA writer from the DITA schema modules
The transform first merges the DITA topic or domain type modules and then
reads each type module and generates a writer transform module for the DITA
topic type or domain.
Note: This transform depends on rigorous conformance to the design pattern
for DITA type modules. As a result, the transform is somewhat fragile and
should be run only when modules change or new modules are added.