owlapi-version5/api/src/main/java/org/semanticweb/owlapi/model/HasIndex.java
package org.semanticweb.owlapi.model;

/**
 * Interface for types with an index; this is used to group objects by type when
 * sorting.
 */
@FunctionalInterface
public interface HasIndex {

    /**
     * @return index for this type. This is not a hashcode for instances, rather a sorting index for
     * the types.
     */
    int typeIndex();
}
