add dedicated nodeListData handling to metricData interface

internal/metricdata/utils.go

@@ -9,6 +9,7 @@ import (
 	"encoding/json"
 	"time"
 
+	"github.com/ClusterCockpit/cc-backend/internal/graph/model"
 	"github.com/ClusterCockpit/cc-backend/pkg/schema"
 )
 
@@ -50,6 +51,19 @@ func (tmdr *TestMetricDataRepository) LoadNodeData(
 	panic("TODO")
 }
 
+func (tmdr *TestMetricDataRepository) LoadNodeListData(
+	cluster, subCluster, nodeFilter string,
+	metrics []string,
+	scopes []schema.MetricScope,
+	resolution int,
+	from, to time.Time,
+	page model.PageRequest,
+	ctx context.Context,
+) (map[string]map[string]map[schema.MetricScope]*schema.JobMetric, error) {
+
+	panic("TODO")
+}
+
 func DeepCopy(jd_temp schema.JobData) schema.JobData {
 	var jd schema.JobData