Possible enumeration values:

NameValueDescription
CodeTypeMask

3

IL

0

Native

1

OPTIL

2

Runtime

3

ManagedMask

4

Unmanaged

4

Managed

0

ForwardRef

16

PreserveSig

128

InternalCall

4096

Synchronized

32

NoInlining

8

AggressiveInlining

256

NoOptimization

64

AggressiveOptimization

512

MaxMethodImplVal

65535