### Question:
PropertyMap extends Property implements AbstractPropertyMap { public PropertyMap deepCopy(boolean keepId) { PropertyMap copy = new PropertyMap(this, keepId); for (Property property : map.values()) { copy.put(property.deepCopy(keepId)); } return copy; } PropertyMap(); protected  PropertyMap(PropertyMap original, boolean keepId);  PropertyMap(@NotNull
    String name);  PropertyMap(@NotNull
    String name, Property... startingProperties); @NotNull Map<String, Property> getMap(); void setMap(Map<String, Property> map); void put(@NotNull
    Property property); Property get(String name); PropertySimple getSimple(String name); String getSimpleValue(String name, String defaultValue); PropertyList getList(String name); PropertyMap getMap(String name); @Override boolean equals(Object obj); @Override int hashCode(); PropertyMap deepCopy(boolean keepId); void afterUnmarshal(Object u, Object parent);  }### Answer:
@Test public void deepCopyShouldCopyAllSimpleFields() { PropertyMap original = createPropertyMap(); PropertyMap copy = original.deepCopy(true); assertNotSame(copy, original, "The copy should not reference the original object"); assertEquals(copy.getId(), original.getId(), "Failed to copy the id property"); assertEquals(copy.getName(), original.getName(), "Failed to copy the name property"); assertEquals(copy.getErrorMessage(), original.getErrorMessage(), "Failed to copy the errorMessage property"); }
@Test public void deepCopyShouldNotCopyIdFieldWhenFlagIsFalse() { PropertyMap original = createPropertyMap(); PropertyMap copy = original.deepCopy(false); assertNotSame(copy, original, "The copy should not reference the original object"); assertFalse(copy.getId() == original.getId(), "The original id property should not be copied."); assertEquals(copy.getName(), original.getName(), "Failed to copy the name property"); assertEquals(copy.getErrorMessage(), original.getErrorMessage(), "Failed to copy the errorMessage property"); }