<dependency>
  <groupId>com.liferay</groupId>
  <artifactId>com.liferay.petra.log4j</artifactId>
  <version>4.1.6</version>
</dependency>

implementation 'com.liferay:com.liferay.petra.log4j:4.1.6'

implementation("com.liferay:com.liferay.petra.log4j:4.1.6")

libraryDependencies += "com.liferay" % "com.liferay.petra.log4j" % "4.1.6"

@Grapes(
  @Grab(group='com.liferay', module='com.liferay.petra.log4j', version='4.1.6')
)

<dependency org="com.liferay" name="com.liferay.petra.log4j" rev="4.1.6" />

[com.liferay/com.liferay.petra.log4j "4.1.6"]

'com.liferay:com.liferay.petra.log4j:jar:4.1.6'