docs: void writeInterPropertyLinks(PropertyDocument document)
  			throws RDFHandlerException {
  		Resource subject = this.rdfWriter.getUri(document.getEntityId()
  				.getIri());
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_DIRECT_CLAIM_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.DIRECT));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_CLAIM_PROP), Vocabulary.getPropertyUri(
  				document.getEntityId(), PropertyContext.STATEMENT));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_STATEMENT_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.VALUE_SIMPLE));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_STATEMENT_VALUE_PROP),
  				Vocabulary.getPropertyUri(document.getEntityId(),
  						PropertyContext.VALUE));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_QUALIFIER_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.QUALIFIER_SIMPLE));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_QUALIFIER_VALUE_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.QUALIFIER));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_REFERENCE_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.REFERENCE_SIMPLE));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_REFERENCE_VALUE_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.REFERENCE));
  
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_NO_VALUE_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.NO_VALUE));
  		this.rdfWriter.writeTripleUriObject(subject, this.rdfWriter
  				.getUri(Vocabulary.WB_NO_QUALIFIER_VALUE_PROP), Vocabulary
  				.getPropertyUri(document.getEntityId(),
  						PropertyContext.NO_QUALIFIER_VALUE));
  		// TODO something more with NO_VALUE
  	}