Our research group has presented the Gamma framework at the Modeling Symposium of EclipseCon 2017. Gamma is a Statechart Composition Framework to model, verify and generate code for component-based reactive systems. The framework builds on Yakindu, an open source statechart modeling tool and provides an additional modeling layer to instatiate a communicating network of statecharts. Compositionality is hierarchical, which facilitates the creation of reusable component libraries.
