code: @Deprecated
      public static IonSystem newSystem(IonCatalog catalog)
      {
          return IonSystemBuilder.standard().withCatalog(catalog).build();
      }
docs: Constructs a new system instance with the given catalog.
  
  @param catalog the catalog to use in the new system.
  If null, a new {@link SimpleCatalog} will be used.
  @return a new {@link IonSystem} instance; not null.
  
  @deprecated Use {@link IonSystemBuilder IonSystemBuilder.standard().withCatalog(catalog).build()} instead.