code: public void setReferences(IReferences references) {
  		Object contextInfo = references.getOneOptional(new Descriptor("pip-services3", "context-info", "*", "*", "1.0"));
  		if (contextInfo instanceof ContextInfo && contextInfo != null && _source == null)
  			_source = ((ContextInfo) contextInfo).getName();
  	}
docs: Sets references to dependent components.
  
  @param references references to locate the component dependencies.