### Question:
AdapterMetaData { public int getAdapterVersion() { return adapterVersion; }  int getAdapterVersion(); @JsonIgnore Set<String> getKeys(); void setValue(String key, String value); void setValue(String key, boolean value); void setValue(String key, long value); String getValue(String key); Long getValueLong(String key); Boolean getValueBoolean(String key); URI getValueURI(String key); boolean hasValue(String key, boolean expectedValue); boolean hasValue(String key, String expectedValue); boolean isExisting(String key); @Override String toString();  }### Answer:
@Test public void adapter_version_initial_0() { assertEquals(0, metaDataToTest.getAdapterVersion()); }
@Test public void adapter_version_set_get_22() { metaDataToTest.adapterVersion=22; assertEquals(22, metaDataToTest.getAdapterVersion()); }