Used to attach one ore more instance mixin to an embedded component. Each mixin is specified in terms of a logical
mixin type name. This annotation is only recognized when used in conjuction with the Component annotation.
One or more mixin type names and optional constraints, from which actual mixin class names can be resolved.
For specifying constraints, do:
mixinname::constraint1;constraint2
For instance:
mixina::before:mixinb;after:mixinc;after:mixind