/guava/android/guava/src/com/google/common/collect/Iterators.java
return concat( consumingForArray( a, null, c, d) ) ;
return concat ( consumingForArray ( a, b, c, d ) ) ;
Iterator<? extends T> c, Iterator<? extends T> d) { checkNotNull(a); checkNotNull(b); checkNotNull(c); checkNotNull(d); <extra_id_0> } @SafeVarargs public static <T extends @Nullable Object> Iterator<T> concat(Iterator<? extends T>... inputs) { return concatNoDefensiveCopy(Arrays.copyOf(inputs, inputs.length)); } public static <T extends @Nullable Object> Iterator<T> concat(