<dependency>
  <groupId>com.google.appengine</groupId>
  <artifactId>appengine</artifactId>
  <version>1.6.4.1</version>
  <type>pom</type>
</dependency>

implementation 'com.google.appengine:appengine:1.6.4.1'

implementation("com.google.appengine:appengine:1.6.4.1")

libraryDependencies += "com.google.appengine" % "appengine" % "1.6.4.1"

@Grapes(
  @Grab(group='com.google.appengine', module='appengine', version='1.6.4.1')
)

<dependency org="com.google.appengine" name="appengine" rev="1.6.4.1" />

[com.google.appengine/appengine "1.6.4.1"]

'com.google.appengine:appengine:jar:1.6.4.1'