description

# Deprecated constructor

const Deprecated(

1. String? message

)

Creates a deprecation annotation which specifies the migration path and expiration of the annotated feature.

The `message` is displayed as part of the warning. The message should be aimed at the programmer using the annotated feature, and should recommend an alternative (if available), and say when this feature is expected to be removed if that is sooner or later than the next major version.

## Implementation

    const Deprecated(this.message) : _kind = _DeprecationKind.use;