* message: Failed to download a protwords file.
     * </pre>
     * @param property The property name for the message. (NotNull)
     * @return this. (NotNull)
     */
    public FessMessages addErrorsFailedToDownloadProtwordsFile(String property) {
        assertPropertyNotNull(property);
        add(property, new UserMessage(ERRORS_failed_to_download_protwords_file));
        return this;
    }

    /**

                RenderDataUtil.register(data, "path", file.getPath());
            }).orElse(() -> {
                throwValidationError(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL), this::asDictIndexHtml);
            });
        });
    }

    /**
     * Download the protected words.
     * @param form The download form.
     * @return The action response.

                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationErrorApi(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL));
                    return null;
                });
    }

    /**
     * Creates an EditBody from a KuromojiItem entity for API responses.
     *

                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationErrorApi(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL));
                    return null;
                });
    }

    /**
     * Create an EditBody DTO from a ProtwordsItem entity.
     *

                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationErrorApi(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL));
                    return null;
                });
    }

    /**
     * Creates an EditBody from a StemmerOverrideItem entity for API responses.
     *

                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationErrorApi(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL));
                    return null;
                });
    }

    /**
     * Create an EditBody DTO from a CharMappingItem entity.
     *

                    file.writeOut(out);
                }))
                .orElseGet(() -> {
                    throwValidationErrorApi(messages -> messages.addErrorsFailedToDownloadProtwordsFile(GLOBAL));
                    return null;
                });
    }

    /**
     * Creates an EditBody from a SynonymItem entity for API responses.
     *