/guava/guava/src/com/google/common/base/Joiner.java
checkNotNull ( appendable ) ;
throws IOException { return appendTo(appendable, entries.iterator()); } @CanIgnoreReturnValue public <A extends Appendable> A appendTo(A appendable, Iterator<? extends Entry<?, ?>> parts) throws IOException { <extra_id_0> if (parts.hasNext()) { Entry<?, ?> entry = parts.next(); appendable.append(joiner.toString(entry.getKey())); appendable.append(keyValueSeparator); appendable.append(joiner.toString(entry.getValue())); while (parts.hasNext()) {