gistfile1.txt

provision {
    url = 'https://intranet.mycorp.com/dev/nexus'
    override( 'org.hibernate:core` ) {
        version = '5.3.0.Final'
    }
    override( 'org.hibernate.javax.persistence:hibernate-jpa-2.1-api' ) {
        groupId = 'javax.persistence'
        artifactId = 'javax.persistence-api'
        version = '2.2'
    )
}

ProvisionOverride.java

class ProvisionOverride {
  private final String match;
  
  private String replacementGroupId;
  private String replacementArtifactId;
  private String replacementVersion;
  
  public String getVersion() {
    return replacementVersion;
  }
  
  public void setVersion(String version) {
    this.replacementVersion = version;
  }
  
  ...
}

ProvisionTask.java

class ProvisionTask {
  ....
    List<ProvisionOverride> overrides = new ...;
  
    public void override(String match, Closure closure) {
        ProvisionOverride override = new ProvisionOverride( match );
        getProject().configure( override, closure );
        overrides.add( override );
  }
  
}