code: private Map<String, Object> getContextAttributes(
  			final BundleContext bundleContext) {
  		final Map<String, Object> attributes = new HashMap<>();
  		if (contextAttributes != null) {
  			attributes.putAll(contextAttributes);
  		}
  		attributes.put(WebContainerConstants.BUNDLE_CONTEXT_ATTRIBUTE,
  				bundleContext);
  		attributes
  				.put("org.springframework.osgi.web.org.osgi.framework.BundleContext",
  						bundleContext);
  		return attributes;
  	}
docs: Returns a list of servlet context attributes out of configured properties
  and attribues containing the bundle context associated with the bundle
  that created the model (web element).
  
  @param bundleContext bundle context to be set as attribute
  @return context attributes map