AssociationsDef can not handle Filters if model is not defined first.
In the attribute definition of an operator, if the AssociationDef xml node does not accept a
model filter then modelbuilder will fail to show the operator in the operation panel.
smtk/session/oscillator/operators/EditSource.sbt just remove line 13 as
- <Resource Name="smtk::session::oscillator::Resource" Filter="model"/>
Then build install smtk and launch modelbuilder. After create an oscillator model, you can no longer see the
edit source operator in the panel.