| Interface | Description | 
|---|---|
| LifeCycleHook | 
 Provides a method in which users can hook into the startup and shutdown lifecycle of Gremlin Server. 
 | 
| Class | Description | 
|---|---|
| DefaultGraphManager | 
 Holder for  
Graph and TraversalSource instances configured for the server to be passed to script
 engine bindings. | 
| ExceptionHelper | 
 Utility class for working with exceptions. 
 | 
| GremlinServerInstall | 
 Command line installer for plugins to Gremlin Server. 
 | 
| LifeCycleHook.Context | 
 Contains objects from the server that might be useful to scripting during the startup and shutdown process. 
 | 
| ServerGremlinExecutor | 
 The core of script execution in Gremlin Server. 
 | 
| SideEffectIterator | |
| ThreadFactoryUtil | |
| TraverserIterator | 
| Enum | Description | 
|---|---|
| MetricManager | 
 Singleton that contains and configures Gremlin Server's  
MetricRegistry. | 
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