| [Serializable] | 
The classes in System.Runtime.CompilerServices are for compiler writers use only.
| IL | Specifies that the method implementation is in Microsoft intermediate language (MSIL). | 
| Native | Specifies that the method is implemented in native code. | 
| OPTIL | Specifies that the method implementation is in optimized intermediate language (OPTIL). | 
| Runtime | Specifies that the method implementation is provided by the runtime. | 
Hierarchy: