// SetReferences is sets references to dependent components.
// Parameters:
//   - references cref.IReferences
// references to locate the component dependencies.
func (c *PrometheusMetricsService) SetReferences(ctx context.Context, references cref.IReferences) {
	c.RestService.SetReferences(ctx, references)

	resolv := c.DependencyResolver.GetOneOptional("prometheus-counters")
	c.cachedCounters = resolv.(*pcount.PrometheusCounters).CachedCounters
	if c.cachedCounters == nil {
		resolv = c.DependencyResolver.GetOneOptional("cached-counters")
		c.cachedCounters = resolv.(*ccount.CachedCounters)
	}
	ref := references.GetOneOptional(
		cref.NewDescriptor("pip-services", "context-info", "default", "*", "1.0"))
	contextInfo := ref.(*cinfo.ContextInfo)

	if contextInfo != nil && c.source == "" {
		c.source = contextInfo.Name
	}
	if contextInfo != nil && c.instance == "" {
		c.instance = contextInfo.ContextId
	}
}