<dependency>
  <groupId>org.webjars.npm</groupId>
  <artifactId>github-com-twbs-bootstrap</artifactId>
  <version>4.1.1</version>
</dependency>

implementation 'org.webjars.npm:github-com-twbs-bootstrap:4.1.1'

implementation("org.webjars.npm:github-com-twbs-bootstrap:4.1.1")

libraryDependencies += "org.webjars.npm" % "github-com-twbs-bootstrap" % "4.1.1"

@Grapes(
  @Grab(group='org.webjars.npm', module='github-com-twbs-bootstrap', version='4.1.1')
)

<dependency org="org.webjars.npm" name="github-com-twbs-bootstrap" rev="4.1.1" />

[org.webjars.npm/github-com-twbs-bootstrap "4.1.1"]

'org.webjars.npm:github-com-twbs-bootstrap:jar:4.1.1'