lib/ews/soap/builders/ews_builder.rb
def folder_ids!(fids, act_as=nil)
      ns = @nbuild.parent.name.match(/subscription/i) ? NS_EWS_TYPES : NS_EWS_MESSAGES
      @nbuild[ns].FolderIds {
        fids.each do |fid|
          fid[:act_as] = act_as if act_as != nil
          dispatch_folder_id!(fid)
        end
      }
    end
def folder_ids!(fids, act_as=nil)
      ns = @nbuild.parent.name.match(/subscription/i) ? NS_EWS_TYPES : NS_EWS_MESSAGES
      @nbuild[ns].FolderIds {
        fids.each do |fid|
          fid[:act_as] = act_as if act_as != nil
          dispatch_folder_id!(fid)
        end
      }
    end
def folder_ids! ( fids , act_as = nil ) ns = @nbuild . parent . name . match ( / /i ) ? NS_EWS_TYPES : NS_EWS_MESSAGES @nbuild [ ns ] . FolderIds { fids . each do | fid | fid [ :act_as ] = act_as if act_as != nil dispatch_folder_id! ( fid ) end } end
Build the FolderIds element
 @see http://msdn.microsoft.com/en-us/library/aa580509.aspx
Build the FolderIds element