### Question:
OSGiELResolver extends BeanELResolver { @Override public boolean isReadOnly(ELContext context, Object base, Object property) { return true; }  @Override Object getValue(ELContext context, Object base, Object property); @Override boolean isReadOnly(ELContext context, Object base, Object property);  }### Answer:
@Test public void isReadonly() { assertThat(resolver.isReadOnly(null, null, null), is(true)); }