The package Element
From Documentation
[Default: none] [since 5.0.0]
It defines a client package (JavaScript) and all of its sub packages that are provided by this server. Use this configuration if some client packages might be loaded from different servers, such as Ajax-as-a-Service.
For example, if this server provides the client packages for foo.fly.*, then the following shall be specified to enable Ajax-as-a-Service.
<client-config>
<package>
<package-name>foo.fly</package-name>
</package>
</client-config>