<dependency>
  <groupId>com.liferay.portal</groupId>
  <artifactId>portal-service</artifactId>
  <version>6.0.4</version>
</dependency>

implementation 'com.liferay.portal:portal-service:6.0.4'

implementation("com.liferay.portal:portal-service:6.0.4")

libraryDependencies += "com.liferay.portal" % "portal-service" % "6.0.4"

@Grapes(
  @Grab(group='com.liferay.portal', module='portal-service', version='6.0.4')
)

<dependency org="com.liferay.portal" name="portal-service" rev="6.0.4" />

[com.liferay.portal/portal-service "6.0.4"]

'com.liferay.portal:portal-service:jar:6.0.4'