Function insert_indentation

example/cacheHierarchy/fkYAML/node.hpp:11055–11061

@brief Insert indentation to the serialization result. @param indent The indent width to be inserted. @param str A string to hold serialization result.

    /// @param indent The indent width to be inserted.
    /// @param str A string to hold serialization result.
    void insert_indentation(const uint32_t indent, std::string& str) const noexcept {
        if (indent == 0) {
            return;
        }

        str.append(indent - get_cur_indent(str), ' ');
    }

    /// @brief Append an anchor property if it's available. Do nothing otherwise.
    /// @param node The target node which is possibly an anchor node.