[#1956] Remove warnings

Author: DavideD

publish.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'maven-publish'
 
-task sourcesJar(type: Jar) {
+tasks.register( 'sourcesJar', Jar ) {
     from sourceSets.main.allJava
     archiveClassifier = 'sources'
 }
 
-task javadocJar(type: Jar) {
+tasks.register( 'javadocJar', Jar ) {
     from javadoc
     archiveClassifier = 'javadoc'
 }