{
bool has_header_essence = false;
Result_t result = ASDCP::MXF::TrackFileReader<OP1aHeader, AS_02::MXF::AS02IndexReader>::OpenMXFRead(filename);
{
bool has_header_essence = false;
Result_t result = ASDCP::MXF::TrackFileReader<OP1aHeader, AS_02::MXF::AS02IndexReader>::OpenMXFRead(filename);