[Type] DOMString[] [Nullable] ✘ [Optional] ✘ [Description] This argument identifies an array containing the properties for which the values need to be retrieved. For an empty array all properties carrying values will be retrieved. Optional arguments allow refining the request. [Parameter] 
propertyNames
p r o p e r t y N a m e s
s u c c e s s C a l l b a c k
e r r o r C a l l b a c k
f r a g m e n t
s o u r c e F o r m a t
l a n g u a g e