<dependency>
  <groupId>tomcat</groupId>
  <artifactId>catalina-optional</artifactId>
  <version>5.5.9-alpha</version>
</dependency>

implementation 'tomcat:catalina-optional:5.5.9-alpha'

implementation("tomcat:catalina-optional:5.5.9-alpha")

libraryDependencies += "tomcat" % "catalina-optional" % "5.5.9-alpha"

@Grapes(
  @Grab(group='tomcat', module='catalina-optional', version='5.5.9-alpha')
)

<dependency org="tomcat" name="catalina-optional" rev="5.5.9-alpha" />

[tomcat/catalina-optional "5.5.9-alpha"]

'tomcat:catalina-optional:jar:5.5.9-alpha'