code: func validateNodeName(nodeName string, fldPath *field.Path) field.ErrorList {
  	allErrs := field.ErrorList{}
  	for _, msg := range apivalidation.ValidateNodeName(nodeName, false /* prefix */) {
  		allErrs = append(allErrs, field.Invalid(fldPath, nodeName, msg))
  	}
  	return allErrs
  }
docs: // validateNodeName tests if the nodeName is valid for VolumeAttachment.