Implement placeholder mechanism in core-grids --------------------------------------------- Key: DROOLS-3074 URL: https://issues.jboss.org/browse/DROOLS-3074 Project: Drools Issue Type: Enhancement Components: Scenario Simulation and Testing Reporter: Daniele Zonca Assignee: Gabriele Cardosi Priority: Minor Refactor custom placeholder mechanism done into Test Scenario (Preview) asset ( https://github.com/kiegroup/drools-wb/pull/951 ) and move it to core-grids