| Name | Description | Type | Package | Framework |
| FlowModelHolder | A holder holding a reference to a Flow model. | Interface | org.springframework.webflow.engine.model.registry | Spring Webflow |
| FlowModelHolderLocator | A companion to FlowModelLocator for access to the FlowModelHolderwrapping the FlowModel. | Interface | org.springframework.webflow.engine.model.registry | Spring Webflow |
| FlowModelLocator | A runtime service locator interface for retrieving flow definitions by id. | Interface | org.springframework.webflow.engine.model.registry | Spring Webflow |
| FlowModelRegistry | A container of flow models. | Interface | org.springframework.webflow.engine.model.registry | Spring Webflow |
| FlowModelRegistryImpl | A generic registry implementation for housing one or more flow models. | Class | org.springframework.webflow.engine.model.registry | Spring Webflow |
| NoSuchFlowModelException | Thrown when no flow model was found during a lookup operation by a flow locator. | Class | org.springframework.webflow.engine.model.registry | Spring Webflow |