protected Attribute parse0(
      DirectClassFile cf,
      int context,
      String name,
      int offset,
      int length,
      ParseObserver observer) {
    ByteArray bytes = cf.getBytes();
    ConstantPool pool = cf.getConstantPool();
    Attribute result = new RawAttribute(name, bytes, offset, length, pool);

    if (observer != null) {
      observer.parsed(bytes, offset, length, "attribute data");
    }

    return result;
  }
Parses attribute content. The base class implements this by constructing an instance of {@link
RawAttribute}. Subclasses are expected to override this to do something better in most cases.

@param cf {@code non-null;} class file to parse from
@param context context to parse in; one of the {@code CTX_*} constants
@param name {@code non-null;} the attribute name
@param offset offset into {@code bytes} to start parsing at; this is the offset to the start of
    attribute data, not to the header
@param length the length of the attribute data
@param observer {@code null-ok;} parse observer to report to, if any
@return {@code non-null;} an appropriately-constructed {@link Attribute}
android/android_framework/dex-maker/src/main/java/com/android/dx/cf/direct/AttributeFactory.java