code: @Override
  	public Dictionary<String, String> getHeaders() {
  		final String sourceMethod = "getHeaders"; //$NON-NLS-1$
  		boolean isTraceLogging = log.isLoggable(Level.FINER);
  		if (isTraceLogging) {
  			log.entering(PlatformServicesImpl.class.getName(), sourceMethod);
  		}
  		Dictionary<String, String> result = null;
  		if (contributingBundle != null) {
  			result = contributingBundle.getHeaders();
  		}
  		if (isTraceLogging) {
  			log.exiting(PlatformServicesImpl.class.getName(), sourceMethod, result);
  		}
  		return result;
  	}
docs: /*
  (non-Javadoc)
  
  @see org.osgi.framework.Bundle#getHeaders()