use crate::*;
/// Combines a content type and a charset value into a single formatted string.
///
/// - `content_type`: The content type (e.g., `"text/html"`).
/// - `charset`: The character set (e.g., `"utf-8"`).
/// - Returns: A format string.
/// Combines a content type and a charset into a single formatted string.
///
/// - `content_type`: The content type (e.g., `"text/html"`).
/// - `charset`: The character set (e.g., `"charset=utf-8"`).
/// - Returns: A format string.