pub fn get_guild_webhooks(guild_id: u64) -> Result<Vec<Webhook>>
Retrieves the webhooks for the given guild's Id.
This method requires authentication.
Retrieve all of the webhooks owned by a guild:
use serenity::http;
let guild_id = 81384788765712384;
let webhooks = http::get_guild_webhooks(guild_id)
.expect("Error getting guild webhooks");