Examples of Actions can be found here: https://github.com/senbox-org/snap-desktop/tree/master/snap-rcp/src/main/java/org/esa/snap/rcp/actions
Complete "how to" will come soon.
Examples of Actions can be found here: https://github.com/senbox-org/snap-desktop/tree/master/snap-rcp/src/main/java/org/esa/snap/rcp/actions
Complete "how to" will come soon.