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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_t3g04jmjbqcrvk1at8a9fb9b9s, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static Web web_mergeWebs(Web web1, Web web2) {
  Web web = web_cloneWeb(web1);
  web_addWebToWeb(web2, web);
  web_mergeNodesByFirstLabel(web);
  ret web;
}

static Web web_mergeWebs(Collection<Web> webs) {
  if (empty(webs)) null;
  Iterator<Web> i = webs.iterator();
  Web web = web_cloneWeb(i.next());
  while (i.hasNext())
    web_addWebToWeb(i.next(), web);
  web_mergeNodesByFirstLabel(web);
  ret web;
}