//! Comment parsing helpers for YAML parsing.
//!
//! Provides token-based comment consumption from a `TokenStream`.
//!
//! Copyright (c) 2026 YAML Library Developers
/// Parses a comment line from the source.
///
/// DRY ENTRY POINT: All comment parsing must use this function.
/// Usage: Call this when you need to parse a comment token from the stream.
///
/// Consumes a Comment token from the TokenStream and returns its content.
/// Returns an empty string if the current token is not a Comment.
pub