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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 S transferCase(S a, S b) {
  if (startsWithUpperCase(a) && !isAllUpperCase(a)) ret firstToUpper(b);
  if (startsWithLowerCase(a) && !isAllLowerCase(a)) ret firstToLower(b);
  if (isAllLowerCase(a)) ret lower(b);
  if (isAllUpperCase(a)) ret upper(b);
  ret b;
}