code: func validateLocalDescendingPath(targetPath string, fldPath *field.Path) field.ErrorList {
  	allErrs := field.ErrorList{}
  	if path.IsAbs(targetPath) {
  		allErrs = append(allErrs, field.Invalid(fldPath, targetPath, "must be a relative path"))
  	}
  
  	allErrs = append(allErrs, validatePathNoBacksteps(targetPath, fldPath)...)
  
  	return allErrs
  }
docs: // This validate will make sure targetPath:
  // 1. is not abs path
  // 2. does not have any element which is ".."