gluegen
org.eclipse.ui.externaltools.ExternalToolBuilder
full,incremental,
LaunchConfigHandle
<project>/.externalToolBuilders/org.eclipse.jdt.core.javabuilder.launch
org.eclipse.ui.externaltools.ExternalToolBuilder
LaunchConfigHandle
<project>/.externalToolBuilders/gluegen builder.launch
org.eclipse.jdt.core.javanature