/// Internal trait used to create `Value` from supported Rust types.
////// This trait backs `Value::new<T>()`; downstream code should call the
/// inherent method instead of implementing or naming this trait directly.
#[doc(hidden)]pubtraitValueConstructor<T> {/// Builds a `Value` that wraps `value`.
////// # Returns
////// Returns the enum variant corresponding to `T`.
fnfrom_type(value: T)->Self;}