sparqlGraphLibrary/src/main/java/com/ge/research/semtk/belmont/NodeGroup.java
public int newUnion() {
        int ret = 1;
        while (this.unionHash.containsKey(ret)) {
            ret += 1;
        }
        this.unionHash.put(ret, new ArrayList<String>());
        return ret;
    }
/**
	 * Create a new union
	 * @return an integer key
	 */
Create a new union
@return an integer key
Create a new union @return an integer key
public int newUnion() {
        int ret = 1;
        while (this.unionHash.containsKey(ret)) {
            ret += 1;
        }
        this.unionHash.put(ret, new ArrayList<String>());
        return ret;
    }
public int newUnion ( ) { int ret = 1 ; while ( this . unionHash . containsKey ( ret ) ) { ret += 1 ; } this . unionHash . put ( ret , new ArrayList < String > ( ) ) ; return ret ; }
Create a new union
 @return an integer key
Create a new union @return an integer key