Method union

solr/core/src/java/org/apache/solr/search/DocSet.java:97–97

Returns the union of this set with another set. Neither set is modified - a new DocSet is created and returned. @return a DocSet representing the union

(DocSet other)

   * @return a DocSet representing the union
   */
  public abstract DocSet union(DocSet other);

  /**
   * Returns the number of documents of the union of this set with another set. May be more