<dependency>
  <groupId>com.google.appengine</groupId>
  <artifactId>lib-parent</artifactId>
  <version>2.0.21</version>
  <type>pom</type>
</dependency>

implementation 'com.google.appengine:lib-parent:2.0.21'

implementation("com.google.appengine:lib-parent:2.0.21")

libraryDependencies += "com.google.appengine" % "lib-parent" % "2.0.21"

@Grapes(
  @Grab(group='com.google.appengine', module='lib-parent', version='2.0.21')
)

<dependency org="com.google.appengine" name="lib-parent" rev="2.0.21" />

[com.google.appengine/lib-parent "2.0.21"]

'com.google.appengine:lib-parent:jar:2.0.21'