### Question:
PropertyPath implements Comparable<PropertyPath> { public static PropertyPath blank() { return EMPTY_INSTANCE; } @JsonCreator  PropertyPath(@JsonProperty("parts") final List<String> parts); static PropertyPath blank(); static PropertyPath fromPathString(final String propertyPath); static PropertyPath fromParts(final String... parts); static PropertyPath fromParts(final List<String> parts); PropertyPath merge(final PropertyPath otherPath); PropertyPath merge(final String part); @JsonIgnore String getPropertyName(); static Builder builder(); @Override int compareTo(final PropertyPath other); @Override String toString(); @Override boolean equals(final Object o); boolean equalsIgnoreCase(final PropertyPath o); @Override int hashCode();  }### Answer:
@Test void testSerde_empty() throws IOException { doSerdeTest(PropertyPath.blank(), PropertyPath.class); }