// used by DllImportAttribute
public void SetDllImport(int attributeIndex, string moduleName, string entryPointName, Cci.PInvokeAttributes flags, bool preserveSig)
{
VerifySealed(expected: false);
Debug.Assert(attributeIndex >= 0);
platformInvokeInfo = new DllImportData(moduleName, entryPointName, flags);
this.dllImportIndex = attributeIndex;
this.dllImportPreserveSig = preserveSig;
SetDataStored();
}