to a particular trade phase category, so it was looking
  at business link of business process not all related to
  this particular simulation movement. So use
  asComposedDocument in order to get good list of business
  links
* add comments about undocumented and untested code

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45361 20353a03-c40f-0410-a6d1-a30d3c3de9de