11. An apparatus comprising a processor and memory including computer program code, the memory and computer program code configured to, with the processor, cause the apparatus to: receive property information from a provider node, the property information being descriptive of at least one of in-device property and at least one remote property having interface support; provide the property information to a delivery context client interface based context model; enable access, by a consumer application, to a property associated with the property information via the delivery context client interface based context model to enable provision of consumer data to the property to enable adaptive or customized services to the consumer application via the property; enable definition of an additional extension with respect to a property associated with the context model; and generate an event notification to indicate that a new property has been added including an additional extension to standard interfaces of the context model.
11. An apparatus comprising a processor and memory including computer program code, the memory and computer program code configured to, with the processor, cause the apparatus to: receive property information from a provider node, the property information being descriptive of at least one of in-device property and at least one remote property having interface support; provide the property information to a delivery context client interface based context model; enable access, by a consumer application, to a property associated with the property information via the delivery context client interface based context model to enable provision of consumer data to the property to enable adaptive or customized services to the consumer application via the property; enable definition of an additional extension with respect to a property associated with the context model; and generate an event notification to indicate that a new property has been added including an additional extension to standard interfaces of the context model. 14. The apparatus of claim 11 , wherein the memory and computer program code are further configured to, with the processor, cause the apparatus to, in response to a listener detecting the event notification, provide an active property added.