code: function loadController(controllersDirectory, controller, development) {
      const filePath = path.resolve(controllersDirectory, controller);
      try {
          return require(filePath);
      } catch (e) {
          if (e.code === 'MODULE_NOT_FOUND' && e.message.indexOf("Cannot find module '" + filePath + "'") === 0 && development) {
              console.error('Cannot find controller: ' + filePath);
              return null;
          } else {
              throw e;
          }
      }
  }
docs: Attempt to load a node module as a controller.
  @param {string} controllersDirectory
  @param {string} controller
  @param {boolean} development
  @returns {*}