public static boolean isSnapshot(PluginCoordinates coordinates) {
        return coordinates.getVersion().endsWith("-SNAPSHOT"); //$NON-NLS-1$
    }
Returns true if the plugin identified by the given coordinates is a
snapshot plugin.
@param coordinates the plugin coordinates
@return true if the given plugin is a snapshot
common/plugin/src/main/java/io/apiman/common/plugin/PluginUtils.java