am: 1ee7930329
* commit '1ee7930329356b0748ae7b49cc4d89b2874cc98c':
docs: Updated Billing API documentation (for Project Nickel).
Change-Id: I695fb2c4a7f0c80148657df6bd3158ef327a6212
am: 1ee7930329
* commit '1ee7930329356b0748ae7b49cc4d89b2874cc98c':
docs: Updated Billing API documentation (for Project Nickel).
Change-Id: I695fb2c4a7f0c80148657df6bd3158ef327a6212