fn from(token: TokenWithLineColumn) -> Self {
        let kind = if BLOCK_COMMENT.is_match(&token.content) {
            TokenType::BlockComment
        } else if LINE_COMMENT.is_match(&token.content) {
            TokenType::LineComment
        } else {
            TokenType::Other
        };
        Self {
            kind,
            content: token.content,
            line: token.line,
            column: token.column,
        }
    }
Convert a `TokenWithLineColumn` to a `TokenWithType`. The kind is worked
out from the content by checking against the developer block comment &
line comment regexps.
doc-chunks/src/developer.rs