public RawTag next() {
            RawTag tag =
                    new RawTag(nameLength, sizeLength, sizeMultiplier, flagLength, data, offset);
            offset += tag.getSize();
            return tag;
        }
Iterates over id3v2 raw tags.
Create an instance of this that configures the
various length and multipliers.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-audiovideo-module/src/main/java/org/apache/tika/parser/mp3/ID3v2Frame.java