Watchers and notifications

Can I alter the Webhook integration? With something like:

from rhodecode.integrations import webhook
webhook.#?

Or should I even create my own integration? Maybe with:

from rhodecode.integrations import webhook
#from rhodecode.integrations.types import webhook
class GoogleChatIntegrationType(webhook.WebhookIntegrationType):
    key = 'gchat'
    display_name = _('Google Chat')
    description = _('send message to a Google Chat Space')
    ## something here ##
integration_type_registry.register_integration_type(gchat.GoogleChatIntegrationType)

I’m ready to test but I don’t even know where to put my code since the current rcextensions documentation page may not apply to RCStack installations!