Resolve "MetadataUtils misses javadoc comments"

Niklas Mertschrequested to merge
35-metadatautils-misses-javadoc-comments into master

Closes #35 (closed)

  • Add/improve Javadoc in MetadataUtils
  • Remove/use dead code in ServerMetadataContainer
  • Convert MetadataUtils.newMetadataInjector(Message) to varargs (now there is newMetadataInjector(List<Message>) and newMetadataInjector(Message...))
Edited by Niklas Mertsch

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