Decode samples do not match current SDK

I've been studying the decode samples and find they do not match the current API 1.8.

For example, the samples use DecodeHeader() while the API 1.8 document describes MFXVideoDECODE_DecodeHeader(). This makes it difficult to work with the samples.

1. Are there samples updated to the current API?

2. Are the older API documents applicable to the obsolete samples available?

Thank you.