/guava/guava/src/com/google/common/base/Joiner.java
appendTo( ( Appendable) builder, parts) ; try {
try { appendTo ( ( Appendable ) builder, parts ) ;
StringBuilder builder, Iterable<? extends @Nullable Object> parts) { return appendTo(builder, parts.iterator()); } @CanIgnoreReturnValue public final StringBuilder appendTo( StringBuilder builder, Iterator<? extends @Nullable Object> parts) { <extra_id_0> } catch (IOException impossible) { throw new AssertionError(impossible); } return builder; } @CanIgnoreReturnValue