AddCustomizationType | Adds a new CustomizationType to the specified entity. | 
  GetDefaultSubtype | Returns the CustomizationSubtype Of The Default Subtype | 
  GetEntityCustomizationSubtype | Returns the CustomizationSubtype with the specified ID. | 
  GetEntityCustomizationSubtypes | Returns the list of all CustomizationSubtypes for the specified entity. | 
  GetEntityCustomizationType | Gets the CustomizationType with the specified ID. | 
  GetEntityCustomizationTypes | Gets the list of all CustomizationTypes for the specified entity. | 
  RemoveCustomizationType | Gets the CustomizationType with the specified ID. |