public void remove(String uuid) {
    checkIssuesAreInitialized();
    uuids.remove(uuid);
  }
@Test
  public void fail_with_ISE_when_removing_uuid_and_not_initialized() {
    assertThatThrownBy(() -> sut.remove("ABCD"))
      .isInstanceOf(IllegalStateException.class)
      .hasMessage("Uuids have not been initialized yet");
  }