@Test public void testGetStateCode_returnsNullForNullKey() { assertThat(StateConverter.getStateCode(null)).isNull(); }
public static String getStateCode(String fullStateName) { if (states.isEmpty()) { putStates(); } return states.get(fullStateName); }
StateConverter { public static String getStateCode(String fullStateName) { if (states.isEmpty()) { putStates(); } return states.get(fullStateName); } }
StateConverter { public static String getStateCode(String fullStateName) { if (states.isEmpty()) { putStates(); } return states.get(fullStateName); }  }
StateConverter { public static String getStateCode(String fullStateName) { if (states.isEmpty()) { putStates(); } return states.get(fullStateName); }  static String getStateCode(String fullStateName); }
StateConverter { public static String getStateCode(String fullStateName) { if (states.isEmpty()) { putStates(); } return states.get(fullStateName); }  static String getStateCode(String fullStateName);  }