code: private boolean isCacheable(PipelineContext context) throws GeomajasException {
  		VectorLayer layer = context.get(PipelineCode.LAYER_KEY, VectorLayer.class);
  		return !(layer instanceof VectorLayerLazyFeatureConversionSupport &&
  				((VectorLayerLazyFeatureConversionSupport) layer).useLazyFeatureConversion());
  	}
docs: Features are only cacheable when not converted lazily as lazy features are incomplete, it would put detached
  objects in the cache.
  
  @return true when features are not converted lazily