public class Service extends Object
 API for retrieving a service from an object.  Services 
 remove the need for a class to directly implement an interface;
 instead a class can implement the Service.Provider inner
 interface.  This makes it possible to "decorate" another
 generic class - like RenderKit - without needing to know
 in advance what optional interfaces the decorated object
 might implement, or to even switch on and off implementations
 dynamically.  A developer can still choose to directly
 implement an interface.  The getService(java.lang.Object, java.lang.Class<T>) method
 supports both direct implementation and the use of 
 the Service.Provider interface.
 
    RenderKit rk = facesContext.getRenderKit();
    // Retrieve the DialogService generically.
    DialogService service = (DialogService)
      ServiceUtils.getService(rk, DialogService.class);
 
 | Modifier and Type | Class and Description | 
|---|---|
| static interface  | Service.ProviderInner interface that should be implemented if a class needs to
 provide services other than by the default approach. | 
| Constructor and Description | 
|---|
| Service() | 
| Modifier and Type | Method and Description | 
|---|---|
| static <T> T | getRenderKitService(javax.faces.context.FacesContext context,
                   Class<T> serviceClass)A convenience for retrieving a service from the current RenderKit. | 
| static <T> T | getService(Object from,
          Class<T> serviceClass)Returns a service that can be cast to the provided serviceClass,
 as vended by the  fromobject. | 
public static <T> T getService(Object from, Class<T> serviceClass)
from object.  If the class
 implements Provider, its getService() method will
 be used.  Otherwise, the default behavior will be to see
 if from is an instance of serviceClass,
 and return it if it is.from - the object that is vending the serviceserviceClass - the type of object that must be returnedserviceClass, or null
   if no such object could be locatedpublic static <T> T getRenderKitService(javax.faces.context.FacesContext context,
                        Class<T> serviceClass)
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