target "Papyrus 2019-03 4.3.0" with source requirements

location "http://download.eclipse.org/releases/2020-12/" eclipse-2020-12 {
 org.eclipse.platform.feature.group lazy
 org.eclipse.rcp.feature.group lazy
 org.eclipse.jdt.feature.group lazy
 org.eclipse.equinox.p2.discovery.feature.feature.group lazy
 org.eclipse.equinox.executable.feature.group lazy
 org.eclipse.ocl.uml.feature.group lazy
 org.eclipse.papyrus.sdk.feature.feature.group lazy
 org.eclipse.papyrus.views.properties.model.xwt lazy
}