| Definition |
| Exception |
| LegacyArrayAccess |
| MiddlewareInterface |
| ApiSpecification | |
| CommandlineOptionsMiddleware | |
| Configuration | |
| ConfigurationFactory | The ConfigurationFactory converts the configuration xml from a Uri into an array. |
| GuideSpecification | |
| PathNormalizingMiddleware | |
| ProvideTemplateOverridePathMiddleware | Determines the path where the general template overrides are. |
| Source | |
| SymfonyConfigFactory | |
| VersionSpecification |