The default read-only implementation of Tag.
The default read-only implementation of Tag. You typically should not need to directly reference this class; instead, use the Tag.apply method to construct new instances.
This Proxy trait allows you to extend the Tag trait with additional state or behavior and implement the read-only methods from Tag using an underlying instance.
Field information in declaration order.
Checks that all required fields are non-null.
Represents a tag applied to content
The id is the only required field, all the rest of the data can be looked up using the id.