add spec to ensure that serialized symbol values are cameled.
add spec to ensure that serialized symbol values are cameled.

woto/axlsx,sr-education/axlsx,raghavendra-prithvi/axlsx,alexanderfrankel/axlsx,pedrogarrett/axlsx,romuloceccon/axlsx,clarkcutler/axlsx,randym/axlsx,kappiah/axlsx,Debiancc/axlsx,bradstewart/axlsx,sh-ft/axlsx,mromulus/axlsx,VueOps/axlsx,legitscript/axlsx