| BehaviorAspectDescriptor | 
 LanguageRuntime is allowed to return null descriptor in case there are no behavior methods for language's concept defined right in the language. 
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| BehaviorDescriptor | 
Deprecated. | 
| CheckingNodeContext | 
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| ConceptDescriptor | 
 IMPLEMENTATION NOTE: this is our internal interface and it's not part of generated language/structure aspect code. 
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| ConceptPresentationAspect | 
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| ConstrainedStringDatatypeDescriptor | 
 Descriptor of `constrained string datatype` entity. 
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| ConstraintFunction<Context,Result> | 
 Presents a constraint function. 
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| ConstraintsAspectDescriptor | 
 LanguageRuntime is allowed to return null descriptor in case there are no constraints for language's concept defined right in the language. 
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| ConstraintsDescriptor | 
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| DataTypeDescriptor | 
 Common descriptor for all datatypes that belongs to some language 
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| EnumerationDescriptor | 
 Descriptor of `enumeration` entity. 
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| FinderRegistry | 
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| FindUsageAspectDescriptor | 
 Aspect interface to provide usage finders for a language. 
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| ILanguageAspect | 
 Marker for a language extension, known as 'Language Aspect'. 
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| LinkDescriptor | 
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| MakeAspectDescriptor | 
 This class, as well as other AspectDescriptors, shall reside not in core/kernel but along with
 respective functionality. 
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| ModuleRuntime.ModuleRuntimeAspectKey<T> | 
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| ModuleRuntime.ModuleRuntimeContext | 
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| NamedElementDescriptor | 
 Common data for all language features 
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| NodePresentationProvider | 
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| PropertyConstraintsDescriptor | 
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| PropertyConstraintsDispatchable | 
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| PropertyDescriptor | 
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| ReferenceConstraintsContext | 
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| ReferenceConstraintsDescriptor | 
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| ReferenceConstraintsDispatchable | 
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| ReferenceDescriptor | 
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| ReferencePresentationContext | 
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| ReferenceScopeProvider | 
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| StructureAspectDescriptor | 
 Interface to access generated meta-information about structure aspect. 
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| StructureAspectDescriptor.Dependencies | 
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