A sample library module's maven central's custom plugged in file.

build.gradle (Library's Maven Central Example)

apply plugin: 'com.android.library'

apply plugin: 'kotlin-android'

apply plugin: 'com.vanniktech.maven.publish' // NEW




publishing {
    repositories {   // by default upload tasks points to the legacy URl which will be down on sunset and all new repos should use the one similar to below.
        maven {
            // change to point to your repo, e.g. http://my.org/repo
            url = "https://s01.oss.sonatype.org/service/local/staging/deploy/maven2"
           credentials {   // using tokenized username and password per maven for security.
               username = ossrhUsername  // jira-username (nexus UI username or username token
               password = ossrhPassword  //jira-password (nexus UI password or password token)
           }
        }
    }
}