Update: simply the api and update copyright head

[vcaesar]

Please provide Issues links to:

• Issues: #

Provide test code:

Description

...

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}