001package jmri.server.json.signalhead;
002
003/**
004 * Constants used by the {@link jmri.server.json.signalhead} package.
005 *
006 * @author Randall Wood 2016
007 */
008public class JsonSignalHead {
009
010    /**
011     * {@value #SIGNAL_HEAD}
012     */
013    public static final String SIGNAL_HEAD = "signalHead"; // NOI18N
014    /**
015     * {@value #SIGNAL_HEADS}
016     */
017    public static final String SIGNAL_HEADS = "signalHeads"; // NOI18N
018
019    /**
020     * Prevent instantiation, since this class only contains static values
021     */
022    private JsonSignalHead() {
023        throw new UnsupportedOperationException("There is no valid instance of this class");
024    }
025}