class AWS::DynamoDB::AttributeCollection::UpdateBuilder

def delete *args

{AttributeCollection#delete} for more information.
Deletes one or more attributes or attribute values. See 
def delete *args
  if args.first.kind_of?(Hash)
    attribute_updates("DELETE",
                      args.shift,
                      :setify => true)
  else
    add_updates(args.inject({}) do |u, name|
                  u.update(name.to_s => {
                             :action => "DELETE"
                           })
                end)
  end
end