| Class | Description | 
|---|---|
| AccessTokens | Wrapper around mapping of a resource identifier to an access token generated for it | 
| Authorization<T extends DataModel> | Used in instances where access permissions are to be enforced. | 
| PermissionEntryBridge | Permission bridge that indexes the fields needed by the
  EntrySecurityFilterFactory | 
| Permissions | |
| PermissionsController | Controller for permissions | 
| RemoteAccess | Access privileges for remote resources | 
| TokenVerification | Verifies the different tokens that ICE handles including  APItoken,Web of registries token | 
| Enum | Description | 
|---|---|
| AccessStatus | Status of an account | 
| AccessType | Used with the access permission classes to indicate the type of access
 that is being granted. | 
| Article | Item or object that the permission acts on. | 
| Exception | Description | 
|---|---|
| AuthorizationException | Exception used in cases where authorization is required but lacking
 for access (i.e. | 
| PermissionException | Exception thrown when user is authorized to access the application but does not
 have the required permission or role to access requested elements | 
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