/guava/guava/src/com/google/common/io/BaseEncoding.java
checkNotNull( encodedSink) ;checkNotNull( chars) ;
checkNotNull ( chars ) ;
@Override int maxDecodedSize(int chars) { return (int) ((alphabet.bitsPerChar * (long) chars + 7L) / 8L); } @Override CharSequence trimTrailingPadding(CharSequence chars) { <extra_id_0> if (paddingChar == null) { return chars; } char padChar = paddingChar.charValue(); int l; for (l = chars.length() - 1; l >= 0; l--) {