@Override
  public Collection<ErrorDetail> getRecentErrors() {
    return ImmutableList.copyOf(recentErrors.values());
  }
A {@link IdempotentImportExecutor} that stores known values in memory.
portability-spi-transfer/src/main/java/org/datatransferproject/spi/transfer/idempotentexecutor/InMemoryIdempotentImportExecutor.java