public void setPluginsDir(File pluginsDir) {
        this.pluginsDir = pluginsDir;
        if (!this.pluginsDir.exists()) {
            this.pluginsDir.mkdirs();
        }
    }
@param pluginsDir the pluginsDir to set
manager/api/core/src/main/java/io/apiman/manager/api/core/plugin/AbstractPluginRegistry.java