VirtualFile @NotNull [] getVirtualFilesWithWord(@NotNull String word,
                                                  @MagicConstant(flagsFromClass = UsageSearchContext.class) short occurenceMask,
                                                  @NotNull GlobalSearchScope scope,
                                                  boolean caseSensitively);
VirtualFile @NotNull [] getVirtualFilesWithWord(@NotNull String word,
                                                  @MagicConstant(flagsFromClass = UsageSearchContext.class) short occurenceMask,
                                                  @NotNull GlobalSearchScope scope,
                                                  boolean caseSensitively)