Does Stand alone toscaparser support tacker extensions?

Hello,

I'm a newbie to tacker. I'm using standalone toscaparser and passing the tacker extensions in the template.

I have read sahadev's explanation of Tacker Architecture and how it validates and translates to hot using toscaparser and heat translator. My doubt is when tacker is passing those templates to toscaparser and successfully validating. Then toscaparser should be able to process the tacker extensions. But I'm getting an error Invalid type: Tacker.

Should we write the definitions in TOSCA_nfv_definition_1_0_0.yaml ?
Kindly guide me
Thanks in anticipation