code: function _cacheFunction(func, data, vars, relPath) {
    func.engine = this.className;
    if (vars) app.views.callbacks[relPath] = func;
  }
docs: /*
  Caches a function into the view cache
  
  @private
  @param {function} func
  @param {string} data
  @param {object} vars
  @param {string} relPath