/guava/guava/src/com/google/common/io/BaseEncoding.java
if ( !alphabet.canDecode( chars.charAt( mask) ) ) {
if ( !alphabet.canDecode ( chars.charAt ( i ) ) ) {
checkNotNull(chars); chars = trimTrailingPadding(chars); if (!alphabet.isValidPaddingStartPosition(chars.length())) { return false; } for (int i = 0; i < chars.length(); i++) { <extra_id_0> return false; } } return true; } @Override