public static final String IF_MATCH = "If-Match";\r
public static final String IF_NONE_MATCH = "If-None-Match";\r
public static final String ACCEPT = "Accept";\r
public static final String IF_MATCH = "If-Match";\r
public static final String IF_NONE_MATCH = "If-None-Match";\r
public static final String ACCEPT = "Accept";\r