final List<Vertex> children = new ArrayList<>();
        final List<Vertex> parents = new ArrayList<>();

        Vertex(String label) {
            this.label = label;
        }

        String getLabel() {
            return label;
        }

        List<Vertex> getChildren() {
            return children;
        }

        List<Vertex> getParents() {
            return parents;
        }

         * Returns the label.
         *
         * @return The label.
         */
        public String getLabel() {
            return label;
        }

        /**
         * Sets the label.
         *
         * @param label The label.
         */
        public void setLabel(final String label) {
            this.label = label;
        }

        /**
         * Returns the value.

			// values
			bugLogIf(GlobalContext, err)
			continue
		}

		h := dtoMetric.GetHistogram()
		for _, b := range h.Bucket {
			labels := make(map[string]string)
			for _, lp := range dtoMetric.GetLabel() {
				if *lp.Name == "api" && toLowerAPILabels {
					labels[*lp.Name] = strings.ToLower(*lp.Value)
				} else {
					labels[*lp.Name] = *lp.Value
				}
			}