nullSource :: Source
nullSource = Source
      { sourceAuthors     = []
      , sourceCategories  = []
      , sourceGenerator   = Nothing
      , sourceIcon        = Nothing
      , sourceId          = Nothing
      , sourceLinks       = []
      , sourceLogo        = Nothing
      , sourceRights      = Nothing
      , sourceSubtitle    = Nothing
      , sourceTitle       = Nothing
      , sourceUpdated     = Nothing
      , sourceOther       = []
      }
nullSource :: Source
nullSource = Source
      { sourceAuthors     = []
      , sourceCategories  = []
      , sourceGenerator   = Nothing
      , sourceIcon        = Nothing
      , sourceId          = Nothing
      , sourceLinks       = []
      , sourceLogo        = Nothing
      , sourceRights      = Nothing
      , sourceSubtitle    = Nothing
      , sourceTitle       = Nothing
      , sourceUpdated     = Nothing
      , sourceOther       = []
      }
nullSource = Source
      { sourceAuthors     = []
      , sourceCategories  = []
      , sourceGenerator   = Nothing
      , sourceIcon        = Nothing
      , sourceId          = Nothing
      , sourceLinks       = []
      , sourceLogo        = Nothing
      , sourceRights      = Nothing
      , sourceSubtitle    = Nothing
      , sourceTitle       = Nothing
      , sourceUpdated     = Nothing
      , sourceOther       = []
      }