<dependency>
  <groupId>struts</groupId>
  <artifactId>struts</artifactId>
  <version>1.1-rc1</version>
</dependency>

implementation 'struts:struts:1.1-rc1'

implementation("struts:struts:1.1-rc1")

libraryDependencies += "struts" % "struts" % "1.1-rc1"

@Grapes(
  @Grab(group='struts', module='struts', version='1.1-rc1')
)

<dependency org="struts" name="struts" rev="1.1-rc1" />

[struts/struts "1.1-rc1"]

'struts:struts:jar:1.1-rc1'