Document Task parameter

Document Task Parameters.

1) Human Tasks
Some of them can be set directly through the Web Designer or Eclipse plugin, but some are hidden, and are only known after reading internal implementation of Human Task Handler.

some of them can be found here
https://github.com/droolsjbpm/jbpm/blob/master/jbpm-human-task/jbpm-human-task-workitems/src/main/java/org/jbpm/services/task/wih/util/PeopleAssignmentHelper.java

https://github.com/droolsjbpm/jbpm/blob/master/jbpm-human-task/jbpm-human-task-workitems/src/main/java/org/jbpm/services/task/wih/AbstractHTWorkItemHandler.java

For example - if I want to change the default business administrator value, I need to check PeopleAssignmentHelper.java in order to know what parameter I need to change.

Or - If I want to know who completed the Human Task, I can just map the "ActorId" parameter to some process variable - but again, 'ActorId' parameter value is known only after reading the source codes.

These parameters should be documented for example here:
http://docs.jboss.org/jbpm/v6.2/userguide/jBPMTaskService.html#DataMappings

2) Custom Work item - i.e. Rest / WS - it would be nice to have the list of parameters documented, with the default and allowed values and with some brief description. These work items are supported and they should be easy to use, even without reading the source codes of RestWorkItemHandler..

// update - REST is documented here
http://docs.jboss.org/jbpm/v6.0/repository/Rest/
WS is missing completely.