return err
			}

			// Store the updated MeshConfig back into the config map.
			newYAML, err := meshConfigToYAML(ymc)
			if err != nil {
				return err
			}
			setMeshConfigData(cfgMap, newYAML)

			// Write the config map back to the cluster.
			if err := mc.updateConfigMap(c, cfgMap); err != nil {
				return err
			}