As a part of the process of component commissioning, the Metro runtime may be requested to build and populate a context object fulfilling the component runtime dependencies. Solutions to dependency constraints can be resolved by direct value construction or by reference to existing services. The Services annotation provides the mechanisms for a component class to declare the set of service interfaces it whishes to publish towards other components. In the absence of the Service annotation a component class is evaluated in its raw form (i.e. X isAssignableFrom Y).

import net.dpml.annotation.Services;
    
@Services( Replicator.class )
public class DefaultReplicator implements Replicator, Serializable, Comparable
{
    ...
}