setMirror(isMirror) {
			this.parsedVersion = null;
			this.parsedFormatInfo = null;
			this.isMirror = isMirror;
		}
Prepare the parser for a mirrored operation.
This flag has effect only on the {@link #readFormatInformation()} and the
{@link #readVersion()}. Before proceeding with {@link #readCodewords()} the
{@link #mirror()} method should be called.

@param mirror Whether to read version and format information mirrored.