[wildfly-dev] wfly bin\*.conf.ps1 files question

I don't understand the reason for setting the (local) variable JAVA_OPTS in the *.conf.ps1 files when the common.ps1 functions completely ignores the local setting and always reads and uses the environment variable value. The in-file comments leads the reader to believe he can override the system env var and define a new JAVA_OPTS in the conf file which will be used by the calling script. Currently this is not true. Can someone explain the intent here? Is this a bug or obsolete code that should be removed?