docs: private void handleDocument(EntityDocument document) {
  		if (document instanceof ItemDocument) {
  			this.entityDocumentProcessor
  					.processItemDocument((ItemDocument) document);
  		} else if (document instanceof PropertyDocument) {
  			this.entityDocumentProcessor
  					.processPropertyDocument((PropertyDocument) document);
  		} else if(document instanceof LexemeDocument) {
  			this.entityDocumentProcessor
  					.processLexemeDocument((LexemeDocument) document);
  		}
  	}