use ;
use ;
/// Marker trait for a parameter key type.
///
/// This trait is automatically implemented for types that are `Clone + Debug +
/// Eq + Hash + Deserialize + Serialize`.
///
/// # Examples
///
/// ```rust,ignore
/// use serde::{Deserialize, Serialize};
///
/// #[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)]
/// pub enum WorkspaceParam {
/// UserEmail,
/// Profile,
/// }
///
/// impl CmdCtxTypes for MyCmdCtxTypes {
/// // ..
/// type WorkspaceParamsKey = WorkspaceParam;
/// }
/// ```