Determining the children objects content models: drush commnd-line switch
Compound objects can have children of any content model. There are three ways the compound object batch module can determine the content model of child objects (see issues for the other two ways #1 (closed) and #3 - separate tasks.)
- when all child objects in a batch are of the same content model, via a command-line switch in the drush command (e.g., --child_cmodels).