code: func (a *QuotaAdmission) Validate(attr admission.Attributes, o admission.ObjectInterfaces) (err error) {
  	// ignore all operations that correspond to sub-resource actions
  	if attr.GetSubresource() != "" {
  		return nil
  	}
  	// ignore all operations that are not namespaced
  	if attr.GetNamespace() == "" {
  		return nil
  	}
  	return a.evaluator.Evaluate(attr)
  }
docs: // Validate makes admission decisions while enforcing quota