void InitializeDelegateMethods()
{
if (null != _delegate_Combine)
{
return;
}
Type delegateType = Types.Delegate;
Type[] delegates = new Type[] { delegateType, delegateType };
_delegate_Combine = TypeSystemServices.Map(delegateType.GetMethod("Combine", delegates));
_delegate_Remove = TypeSystemServices.Map(delegateType.GetMethod("Remove", delegates));
}