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}