public synchronized Node<ElkClass> getEquivalentClassesQuietly(
			ElkClassExpression classExpression) throws ElkException {
		try {
			return getEquivalentClasses(classExpression);
		} catch (final ElkInconsistentOntologyException e) {
			// All classes are equivalent to each other, so also to owl:Nothing.
			return getTaxonomyQuietly().getBottomNode();
		}
	}
public synchronized Node<ElkClass> getEquivalentClassesQuietly(
			ElkClassExpression classExpression) throws ElkException {
		try {
			return getEquivalentClasses(classExpression);
		} catch (final ElkInconsistentOntologyException e) {
			
			return getTaxonomyQuietly().getBottomNode();
		}
	}
public synchronized Node < ElkClass > getEquivalentClassesQuietly ( ElkClassExpression classExpression ) throws ElkException { try { return getEquivalentClasses ( classExpression ) ; } catch ( final ElkInconsistentOntologyException e ) { // All classes are equivalent to each other, so also to owl:Nothing. return getTaxonomyQuietly ( ) . getBottomNode ( ) ; } }
Return the {@code Node} containing equivalent classes of the given
{@link ElkClassExpression}. Calling of this method may trigger the
computation of the taxonomy, if it has not been done yet.

@param classExpression
the {@link ElkClassExpression} for which to return the
{@link Node}
@return the set of {@link Node} whose members are {@link ElkClass}es
equivalent to the given {@link ElkClassExpression}
@throws ElkException
if the result cannot be computed
Return the { @code Node } containing equivalent classes of the given { @link ElkClassExpression } . Calling of this method may trigger the computation of the taxonomy if it has not been done yet .