annotation Athena::Serializer::Annotations::ReadOnly
   
  Overview
Indicates that a property is read-only and cannot be set during deserialization.
Example
class Example
  include ASR::Serializable
  property name : String
  @[ASRA::ReadOnly]
  property password : String?
end
obj = ASR.serializer.deserialize Example, %({"name":"Fred","password":"password1"}), :json
obj.name     # => "Fred"
obj.password # => nil
!!!warning The property must be nilable, or have a default value.