Versioning of META-INF/services

Jan Bartel janb at
Thu Oct 26 03:47:38 UTC 2017 says:

"JAR metadata, such as that found in the MANIFEST.MF file and the
META-INF/services directory, need not be versioned."

Does the language "need not" actually mean "will not be", or is the
intention to leave the door open to versioning of META-INF/services?

Jan Bartel <janb at>
*Expert assistance from the creators of Jetty and CometD*

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