<dependency>
  <groupId>com.nikialeksey</groupId>
  <artifactId>nullfree-maven-plugin</artifactId>
  <version>1.5.1</version>
  <type>maven-plugin</type>
</dependency>

implementation 'com.nikialeksey:nullfree-maven-plugin:1.5.1'

implementation("com.nikialeksey:nullfree-maven-plugin:1.5.1")

libraryDependencies += "com.nikialeksey" % "nullfree-maven-plugin" % "1.5.1"

@Grapes(
  @Grab(group='com.nikialeksey', module='nullfree-maven-plugin', version='1.5.1')
)

<dependency org="com.nikialeksey" name="nullfree-maven-plugin" rev="1.5.1" />

[com.nikialeksey/nullfree-maven-plugin "1.5.1"]

'com.nikialeksey:nullfree-maven-plugin:jar:1.5.1'