code: func RemoveConversion(in interface{}, out interface{}) {
  	srcType := extractType(in)
  	targetType := extractType(out)
  	if _, ok := converterMap[srcType]; !ok {
  		return
  	}
  	if _, ok := converterMap[srcType][targetType]; !ok {
  		return
  	}
  	delete(converterMap[srcType], targetType)
  }
docs: // RemoveConversion registered conversions