docs: function lazy(arg) {
    var conf = this.configure();
    var action = arg.action();
    if(!conf.command.dir || action !== undefined) return false;
    var file = path.join(conf.command.dir, getModulePath.call(this, arg))
    try{
      action = require(file);
      if(typeof action !== 'function') {
        return this.raise(this.errors.ECMD_TYPE, [file]);
      }
      arg.action(action);
    }catch(e) {
      return this.raise(this.errors.ECMD_REQUIRE, [file, e.message], e);
    }
  }