# Package org.jbpm.workflow.instance

- Interface Summary
  Interface | Description
  --- | ---
  NodeInstance | Represents a node instance in a RuleFlow.
  NodeInstanceContainer |
  WorkflowProcessInstance |

- Class Summary
  Class | Description
  --- | ---
  WorkflowProcessInstanceUpgrader |

- Enum Summary
  Enum | Description
  --- | ---
  NodeInstance.CancelType |

- Exception Summary
  Exception | Description
  --- | ---
  WorkflowRuntimeException | This exception provides the context information of the error in execution of the flow.