Latest version of com.liferay.portal:com.liferay.portal.impl
https://javadoc.io/doc/com.liferay.portal/com.liferay.portal.impl
Current version 18.0.2
https://javadoc.io/doc/com.liferay.portal/com.liferay.portal.impl/18.0.2
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.liferay.portal/com.liferay.portal.impl/18.0.2/package-list