MethodImplAttributes
AggressiveInlining = 256
CodeTypeMask = 3
ForwardRef = 16
IL = 0
InternalCall = 4096
Managed = 0
ManagedMask = 4
Native = 1
NoInlining = 8
NoOptimization = 64
OPTIL = 2
PreserveSig = 128
Runtime = 3
Synchronized = 32
Unmanaged = 4