+ <plugin>
+ <groupId>org.antlr</groupId>
+ <artifactId>antlr4-maven-plugin</artifactId>
+ <configuration>
+ <sourceDirectory>src/main/antlr</sourceDirectory>
+ <outputDirectory>target/generated-sources/parser/org/opendaylight/yangtools/yang/data/impl/leafref</outputDirectory>
+ <visitor>true</visitor>
+ <listener>true</listener>
+ </configuration>
+ </plugin>