# Package org.eclipse.viatra.cep.core.api.events

- Class Summary
  Class | Description
  --- | ---
  AbstractEventInstance | Base class to be extended by actual event instances.
  ParameterizableEventInstance | Base class to be extended by parameterizable event instances.
  ParameterizableViatraQueryPatternEventInstance | Base class to be extended by parameterizable event instances originating from an VIATRA Query engine.