lib/less/plugin-manager.js
function(less) {
    this.less = less;
    this.visitors = [];
    this.preProcessors = [];
    this.postProcessors = [];
    this.installedPlugins = [];
    this.fileManagers = [];
    this.iterator = -1;
    this.pluginCache = {};
    this.Loader = new less.PluginLoader(less);
}
function(less) {
    this.less = less;
    this.visitors = [];
    this.preProcessors = [];
    this.postProcessors = [];
    this.installedPlugins = [];
    this.fileManagers = [];
    this.iterator = -1;
    this.pluginCache = {};
    this.Loader = new less.PluginLoader(less);
}
Plugin Manager