Gradle 7 (#885)

vtm-extras/build.gradle

@@ -1,5 +1,5 @@
 apply plugin: 'java-library'
-apply plugin: 'maven'
+apply plugin: 'maven-publish'
 
 dependencies {
     api project(':vtm')
@@ -13,6 +13,14 @@ sourceSets {
     main.java.srcDirs = ['src']
 }
 
+publishing {
+    publications {
+        maven(MavenPublication) {
+            from components.java
+        }
+    }
+}
+
 if (project.hasProperty("SONATYPE_USERNAME")) {
     afterEvaluate {
         project.apply from: "${rootProject.projectDir}/deploy.gradle"