import "github.com/mattermost/platform/model" // Create a new channel channel := &model.Channel{ Name: "new-channel", TeamId: "team-id", CreatorId: "user-id", Type: model.ChannelTypePrivate, } createdChannel, err := client.CreateChannel(channel) // Get a channel by ID channel, err := client.GetChannel("channel-id") // Update a channel's properties updatedChannel := &model.Channel{ Id: "channel-id", DisplayName: "new-display-name", } updatedChannel, err := client.UpdateChannel(updatedChannel) // Delete a channel err := client.DeleteChannel("channel-id")In this example, we use the `model.Channel` struct to create, retrieve, update, and delete Mattermost channels. These operations are performed using methods provided by the Mattermost API client library, which is not part of the `model` package.