Question - Need ignore some fields on diff

[disaster37]

Hi,
I try to implement upjet provider for rancher2.
On ressource rancher_app_v2,the terraform provider update some fields each time (labels and annotations).

So on upjet, it loop on reconciltation because of that.

Wat is the right way to avoid this ?

First
I not found documentation about the purpose of it (I found it on aws-provider)

func Configure(p *config.Provider) {
  p.AddResourceConfigurator("rancher2_app_v2", func(r *config.Resource) {
    r.LateInitializer = config.LateInitializer{
	IgnoredFields: []string{
		"annotations",
		"labels",
	},
    }
  }
}

Second
I not found documentation about the purpose of it (I found it on aws-provider)

func Configure(p *config.Provider) {
	p.AddResourceConfigurator("rancher2_app", func(r *config.Resource) {
                r.TerraformCustomDiff = func(diff *terraform.InstanceDiff, _ *terraform.InstanceState, _ *terraform.ResourceConfig) (*terraform.InstanceDiff, error) {
			if diff != nil && diff.Attributes != nil {
				delete(diff.Attributes, "labels.#")
				delete(diff.Attributes, "annotations.#")
			}
			return diff, nil
		}
       }
}

Maybee there are another way ?