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DHIS 2 API client for Java.

There is a newer version: 2.0.4

package org.hisp.dhis.util;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

public class CollectionUtils
{
    @SafeVarargs
    public static  Set newImmutableSet( T... items )
    {
        Set set = new HashSet<>();

        for ( T item : items )
        {
            set.add( item );
        }

        return Collections.unmodifiableSet( set );
    }
}