/guava/guava/src/com/google/common/io/CharSource.java
if ( !source.isEmpty( ) ) { for ( CharSource source : sources) {
for ( CharSource source : sources ) { if ( !source.isEmpty ( ) ) {
@Override public Reader openStream() throws IOException { return new MultiReader(sources.iterator()); } @Override public boolean isEmpty() throws IOException { <extra_id_0> return false; } } return true; } @Override