lib/ews/soap/builders/ews_builder.rb
def contacts_view!(con_view)
      attribs = {}
      con_view.each_pair {|k,v| attribs[camel_case(k)] = v.to_s}
      @nbuild[NS_EWS_MESSAGES].ContactsView(attribs)
    end
def contacts_view!(con_view)
      attribs = {}
      con_view.each_pair {|k,v| attribs[camel_case(k)] = v.to_s}
      @nbuild[NS_EWS_MESSAGES].ContactsView(attribs)
    end
Build the ContactsView element