code: public String get(Class<? extends Annotation> scope, String key) {
  		Preconditions.checkNotNull(scope, "Parameter 'scope' must not be [" + scope + "]");
  		Preconditions.checkNotNull(key, "Parameter 'key' must not be [" + key + "]");
  		Preconditions.checkArgument(scope.isAnnotationPresent(Scope.class), 
  				"Parameter 'scope' must be annotated with @Scope");
  		return store(scope).get(key);
  	}
docs: Gets the value corresponding to the specified key in the <b>current</b>
  context of the specified scope.
  
  @param scope Scope qualifier.
  @param key The key to value.
  @return The value corresponding to the specified key in the <b>current</b>
  context of the specified scope.