[Enter description of this org.eclipse.viatra2.gtasm.patternmatcher.extension point.] [Enter the first release in which this org.eclipse.viatra2.gtasm.patternmatcher.extension point appears.] [Enter org.eclipse.viatra2.gtasm.patternmatcher.extension point usage example here.] [Enter API information here.] [Enter information about supplied implementation of this org.eclipse.viatra2.gtasm.patternmatcher.extension point.]