@Nullable
  RegExpMatchResult matches(String regExp,
                            PsiFile regExpFile,
                            PsiElement elementInHost,
                            String sampleText,
                            long timeoutMillis);
@Nullable
  RegExpMatchResult matches(String regExp,
                            PsiFile regExpFile,
                            PsiElement elementInHost,
                            String sampleText,
                            long timeoutMillis)