# Deprecated constructor

const Deprecated(String expires)

Create a deprecation annotation which specifies the expiration of the annotated feature.

The `expires` argument should be readable by programmers, and should state when an annotated feature is expected to be removed. This can be specified, for example, as a date, as a release number, or as relative to some other change (like "when bug 4418 is fixed").

## Implementation

    const Deprecated(String expires) : this.expires = expires;