liferay/liferay-maven-support — comment on commit 189e0a405fdb336780fad429a2b4f771bdbe6c48
File: plugins/liferay-maven-plugin/src/main/java/com/liferay/maven/plugins/ServiceBuilderMojo.java line 161
By l15k4:

in this condition, if none of these parameters is explicitly declared by user (in plugin), it fails on NPE