     timing: {
                  delay: 100,
                  duration: 50,
                  easing: config.ANIMATION_CUBIC_BEZIER
                }
              }, {
                name: 'paper-menu-shrink-height-animation',
                timing: {
                  duration: 200,
                  easing: 'ease-in'
                }
              }];
            }
          },

          /**
           * By default, the dropdown will constrain scrolling on the page
           * to itself when opened