<dependency>
  <groupId>portlet-api</groupId>
  <artifactId>portlet-api</artifactId>
  <version>1.0</version>
</dependency>

implementation 'portlet-api:portlet-api:1.0'

implementation("portlet-api:portlet-api:1.0")

libraryDependencies += "portlet-api" % "portlet-api" % "1.0"

@Grapes(
  @Grab(group='portlet-api', module='portlet-api', version='1.0')
)

<dependency org="portlet-api" name="portlet-api" rev="1.0" />

[portlet-api/portlet-api "1.0"]

'portlet-api:portlet-api:jar:1.0'