public Builder traits(List<ShapeId> traits) {
            this.traits.clear();
            this.traits.get().addAll(traits);
            return this;
        }
Gets the list of shape IDs that auth implementations must know about
in order to successfully utilize the auth scheme.

@return Returns the auth traits.
smithy-model/src/main/java/software/amazon/smithy/model/traits/AuthDefinitionTrait.java