ImmutableSizeOption implements SizeOption { @Override public int getSize() { return size; } private  ImmutableSizeOption(final int size); @Override void accept(final OptionVisitor visitor); @Override boolean equals(final Object o); @Override int getSize(); @Override int hashCode(); @Override String toString();  }
@Test public void getSizeReturnsExpected() { assertThat(underTest.getSize()).isEqualTo(SIZE); }