### Question:
CharsetHelper { @Nonnull @ReturnsMutableCopy public static ICommonsOrderedMap <String, Charset> getAllCharsets () { return new CommonsLinkedHashMap <> (s_aAllCharsets); } private  CharsetHelper(); @Nonnull static Charset getCharsetFromName(@Nonnull @Nonempty final String sCharsetName); @Nullable static Charset getCharsetFromNameOrNull(@Nullable final String sCharsetName); @Nullable static Charset getCharsetFromNameOrDefault(@Nullable final String sCharsetName, @Nullable final Charset aDefault); @Nonnull @ReturnsMutableCopy static ICommonsOrderedMap <String, Charset> getAllCharsets(); @Nullable static String getAsStringInOtherCharset(@Nullable final String sText,
                                                  @Nonnull final Charset aCurrentCharset,
                                                  @Nonnull final Charset aNewCharset); @Nonnegative static int getUTF8ByteCount(@Nullable final String s); @Nonnegative static int getUTF8ByteCount(@Nullable final char [] aChars); @Nonnegative static int getUTF8ByteCount(final char c); @Nonnegative static int getUTF8ByteCount(@Nonnegative final int c); @Nonnull static InputStreamAndCharset getInputStreamAndCharsetFromBOM(@Nonnull @WillNotClose final InputStream aIS); @Nonnull static InputStreamReader getReaderByBOM(@Nonnull final InputStream aIS, @Nonnull final Charset aFallbackCharset);  }### Answer:
@Test public void testBasic () { assertNotNull (CharsetHelper.getAllCharsets ()); assertTrue (CharsetHelper.getAllCharsets ().size () > 0); }