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Utility classes and methods developed for Brooklyn but not dependendent on Brooklyn or much else

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package brooklyn.util.stream;

import java.io.OutputStream;

/** output stream which throws if anyone tries to write to it */
public class IllegalOutputStream extends OutputStream {
    @Override public void write(int b) {
        throw new IllegalStateException("should not write to this output stream");
    }
    @Override public void write(byte[] b, int off, int len) {
        throw new IllegalStateException("should not write to this output stream");
    }
}