elk-reasoner/src/main/java/org/semanticweb/elk/reasoner/stages/AbstractReasonerState.java
public synchronized Taxonomy<ElkObjectProperty> getObjectPropertyTaxonomy()
			throws ElkInconsistentOntologyException, ElkException {

		ruleAndConclusionStats.reset();

		restoreConsistencyCheck();
		if (consistencyCheckingState.isInconsistent()) {
			throw new ElkInconsistentOntologyException();
		}

		LOGGER_.trace("Property hierarchy computation");
		complete(stageManager.objectPropertyTaxonomyComputationStage);

		incompleteness_.log(
				incompleteness_.getIncompletenessMonitorForClassification());
		return objectPropertyTaxonomyState.getTaxonomy();
	}
public synchronized Taxonomy<ElkObjectProperty> getObjectPropertyTaxonomy()
			throws ElkInconsistentOntologyException, ElkException {

		ruleAndConclusionStats.reset();

		restoreConsistencyCheck();
		if (consistencyCheckingState.isInconsistent()) {
			throw new ElkInconsistentOntologyException();
		}

		LOGGER_.trace("Property hierarchy computation");
		complete(stageManager.objectPropertyTaxonomyComputationStage);

		incompleteness_.log(
				incompleteness_.getIncompletenessMonitorForClassification());
		return objectPropertyTaxonomyState.getTaxonomy();
	}
Compute the inferred taxonomy of the object properties for the given
ontology if it has not been done yet.

@return the object property taxonomy implied by the current ontology
@throws ElkInconsistentOntologyException
if the ontology is inconsistent
@throws ElkException
if the reasoning process cannot be completed successfully