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SAN FRANCISCO, CA - MAY 19: A view of the new flagship Apple Store on May 19, 2016 in San Francisco, California. Apple is preparing to open its newest flagship store in San Francisco's Union Square on Saturday May 21. The new store features new design elements as well as community programs including the "genius grove" where where customers can get support under a canopy of local trees and "the plaza" a public space that will be open 24 hour a day. Visitors will enter the store through 42-foot tall sliding glass doors. (Photo by Justin Sullivan/Getty Images)

SAN FRANCISCO, CA - MAY 19:  A view of the new flagship Apple Store on May 19, 2016 in San Francisco, California. Apple is preparing to open its newest flagship store in San Francisco's Union Square on Saturday May 21. The new store features new design elements as well as community programs including the "genius grove" where where customers can get support under a canopy of local trees and "the plaza" a public space that will be open 24 hour a day. Visitors will enter the store through 42-foot tall sliding glass doors.  (Photo by Justin Sullivan/Getty Images)