<dependency>
  <groupId>org.webjars.npm</groupId>
  <artifactId>material__button</artifactId>
  <version>0.32.0</version>
</dependency>

implementation 'org.webjars.npm:material__button:0.32.0'

implementation("org.webjars.npm:material__button:0.32.0")

libraryDependencies += "org.webjars.npm" % "material__button" % "0.32.0"

@Grapes(
  @Grab(group='org.webjars.npm', module='material__button', version='0.32.0')
)

<dependency org="org.webjars.npm" name="material__button" rev="0.32.0" />

[org.webjars.npm/material__button "0.32.0"]

'org.webjars.npm:material__button:jar:0.32.0'