<dependency>
  <groupId>com.opsbears.webcomponents.application.slf4j</groupId>
  <artifactId>log4j</artifactId>
  <version>1.0.0-alpha13</version>
</dependency>

implementation 'com.opsbears.webcomponents.application.slf4j:log4j:1.0.0-alpha13'

implementation("com.opsbears.webcomponents.application.slf4j:log4j:1.0.0-alpha13")

libraryDependencies += "com.opsbears.webcomponents.application.slf4j" % "log4j" % "1.0.0-alpha13"

@Grapes(
  @Grab(group='com.opsbears.webcomponents.application.slf4j', module='log4j', version='1.0.0-alpha13')
)

<dependency org="com.opsbears.webcomponents.application.slf4j" name="log4j" rev="1.0.0-alpha13" />

[com.opsbears.webcomponents.application.slf4j/log4j "1.0.0-alpha13"]

'com.opsbears.webcomponents.application.slf4j:log4j:jar:1.0.0-alpha13'