Get channel id from message

[XTREME1738]

this is my code
private void Discord_MessageCreate(DiscordMessage message)
{
if (message.channel != null) {

  }

}

and when it loads i get

error CS1061: Type Oxide.Ext.Discord.Entities.Messages.DiscordMessage does not contain a definition for channel and no extension method channel of type Oxide.Ext.Discord.Entities.Messages.DiscordMessage could be found. Are you missing an assembly reference?