<dependency>
  <groupId>com.sun.faces</groupId>
  <artifactId>jsf-api</artifactId>
  <version>2.0.0-b21</version>
</dependency>

implementation 'com.sun.faces:jsf-api:2.0.0-b21'

implementation("com.sun.faces:jsf-api:2.0.0-b21")

libraryDependencies += "com.sun.faces" % "jsf-api" % "2.0.0-b21"

@Grapes(
  @Grab(group='com.sun.faces', module='jsf-api', version='2.0.0-b21')
)

<dependency org="com.sun.faces" name="jsf-api" rev="2.0.0-b21" />

[com.sun.faces/jsf-api "2.0.0-b21"]

'com.sun.faces:jsf-api:jar:2.0.0-b21'