Build failure on master...anyone know what this is?

[Alex Huang]

[INFO] --- exec-maven-plugin:1.2.1:exec (compile) @ cloud-apidoc ---
Check, is this api part of another build profile? Null value for key: 
configureSimulator preProcessedCommand=1
Traceback (most recent call last):
  File "/cyg/d/src/acs/master/tools/apidoc/gen_toc.py", line 189, in <module>
    category = choose_category(fn)
  File "/cyg/d/src/acs/master/tools/apidoc/gen_toc.py", line 169, in 
choose_category
    (fn, __file__))
Exception: Need to add a category for deleteCacheStore.xml to 
/cyg/d/src/acs/master/tools/apidoc/gen_toc.py:known_categories


Thanks.
--Alex