| AnimatorParameterTypeAttribute | An attribute that specifies AnimatorControllerParameterType as a derived class of AnimatorParameterReference | 
| ConstraintableAttribute | Attribute that specifies that it can be constrained to a derived class of ParameterReference | 
| ConstraintableEnumAttribute | Attribute that specifies that it can be constrained to a derived class of ParameterReference | 
| DocumentableAttribute | Inner class to use when documenting. | 
| DocumentLabel | Inner class to use when documenting. | 
| DocumentManual | For internal | 
| DocumentOrder | Inner class to use when documenting. | 
| DocumentType | Inner class to use when documenting. | 
| ExcludeTestAttribute | For Arbor Test | 
| HideInDocument | Attributes to hide in documents | 
| ParameterConstraintAttributeBase | Inner class for associating with ParameterReference. | 
| ParameterTypeAttribute | An attribute that specifies Parameter.Type as a derived class of ParameterReference |