//The po is activated
//Logger logger = ((org.objectweb.jorm.util.api.Loggable) getPClassMapping()).getLogger();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, "getPClassMapping",
"()Lorg/objectweb/jorm/api/PClassMapping;");
mv.visitTypeInsn(CHECKCAST, "org/objectweb/jorm/util/api/Loggable");
mv.visitMethodInsn(INVOKEINTERFACE, "org/objectweb/jorm/util/api/Loggable",
"getLogger", "()Lorg/objectweb/util/monolog/api/Logger;");
final int loggerIdx = nextLocalVarIdx;
nextLocalVarIdx++;
mv.visitVarInsn(ASTORE, loggerIdx);