channel_authorize
The only substantive change to this topic is to replace "XRP" with "XRP or fungible tokens," and to shorten "XRP amount" to "amount."
For the full draft topic in context, see https://xrpl-dev-portal--token-payment-channels-and-escrows.preview.redocly.app/docs/references/http-websocket-apis/public-api-methods/payment-channel-methods/channel_authorize.