JSC Contains a list of extensions with additional dependencies to overrule missing dependencies in extensions or to control specific extensions in general. Describes the additional meta data for an extension whereas the node name have to be the extension identifier. Specifies a list of extension versions for which the extra dependecies should be active. Specifies a list of platforms for which the extra dependencies mechanism is active. Specifies a list of additional dependencies. Specifies the list of extensions with extra dependecies.