@Test public void gets_the_real_stderr() { assertThat(systemOutErr.err(), is(System.err)); }
@Override public PrintStream err() { return System.err; }
SystemOutErr implements OutErr { @Override public PrintStream err() { return System.err; } }
SystemOutErr implements OutErr { @Override public PrintStream err() { return System.err; }  }
SystemOutErr implements OutErr { @Override public PrintStream err() { return System.err; }  @Override PrintStream out(); @Override PrintStream err(); @Override void setOut(PrintStream out); @Override void setErr(PrintStream err); }
SystemOutErr implements OutErr { @Override public PrintStream err() { return System.err; }  @Override PrintStream out(); @Override PrintStream err(); @Override void setOut(PrintStream out); @Override void setErr(PrintStream err);  }