setMirror method
Prepare the parser for a mirrored operation.
This flag has effect only on the readFormatInformation and the
readVersion. Before proceeding with readCodewords the
mirror
method should be called.
@param mirror Whether to read version and format information mirrored.
Implementation
void setMirror(bool mirror) {
_parsedVersion = null;
_parsedFormatInfo = null;
_isMirror = mirror;
}