Contains information about a category associated with a Feed or Entry. It has the following attributes:
term
scheme
label
Reference: validator.w3.org/feed/docs/rfc4287.html#element.category
Contains information on the agent used to generate the feed.
Reference: validator.w3.org/feed/docs/rfc4287.html#element.generator
DateConstruct indicating the most recent time when a Feed or Entry was modified in a way the publisher considers significant.
Reference: validator.w3.org/feed/docs/rfc4287.html#element.updated
An error caused by searching for a dependency that is completely unknown, i.e. has no versions available whatsoever.
A state that encapsulates a set of {#requirements} with an {Array} of possibilities