elk-reasoner/src/main/java/org/semanticweb/elk/reasoner/taxonomy/ConcurrentInstanceTaxonomy.java
@Override
	public IndividualNode.Projection<ElkClass, ElkNamedIndividual> getInstanceNode(
			final ElkNamedIndividual individual) {
		return individualNodeStore_.getNode(individual);
	}
@Override
	public IndividualNode.Projection<ElkClass, ElkNamedIndividual> getInstanceNode(
			final ElkNamedIndividual individual) {
		return individualNodeStore_.getNode(individual);
	}
Obtain a {@link TypeNode} object for a given {@link ElkClass}, or
{@code null} if none assigned.

@param individual
@return instance node object for elkClass, possibly still incomplete