[#D60C5B3965D790D7077F46BB6AA54BA1E41BC38C]
Normalize the URL path
static_url& normalize_path();
Applies Syntax-based normalization to the URL path.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded. Redundant path-segments are removed.
Strong guarantee. Calls to allocate may throw.