I have successfully setup the amazon developer portal for my skill, the skill successfully links account in the alexa companion app. However, I'm unsure how to USE the access token in Alexa's request to open a new GmailService. I can only find information about creating a gmail service using the client secret and client ID which defeats the purpose of having an access token, which is not what I want. I want to use the access token I already have to begin making calls to a GMail.api. I'm new to the gmail ApI so I need help.