<dependency>
<groupId>org.grails</groupId>
<artifactId>grails-validation</artifactId>
<version>3.1.9</version>
</dependency>
compile
|-- org.codehaus.groovy:groovy:2.4.7
|-- org.slf4j:slf4j-api:1.7.10
|-- org.slf4j:jcl-over-slf4j:1.7.10
|-- commons-validator:commons-validator:1.4.1
|-- org.grails:grails-core:3.1.9
test
|-- org.codehaus.groovy:groovy-test:2.4.7
|-- junit:junit:4.12