anchor.diff:      member this.UnregisterComponent multiId =
           this.Entries.Remove multiId
   
  +/// A storable reference to a component in its containing array.
   type [<NoEquality; NoComparison; Struct>] ComponentRef<'t when 't : struct and 't :> Component> =
       { ComponentIndex : int
         ComponentArr : 't array }
  
positive.code:             true
          | (false, _) -> false
  
  and [<AbstractClass>] SystemMultiplexed<'t, 'w when 't : struct and 't :> Component> () =
      inherit SystemCorrelated<'t ComponentMultiplexed, 'w> ()
  
  
negative.code: open System.Collections.Generic
  open Prime
  
  /// Handle to one of an array of multiplexed components.
  type OneOf<'t when 't : struct> =
      { mutable OneOf : 't }
  
  /// The base component type of an Ecs.
  type Component =
      abstract RefCount : int with get, set
  
  