src/main/java/com/feedzai/fos/impl/weka/WekaManager.java
private synchronized void saveConfiguration() {
        for (WekaModelConfig wekaModelConfig : modelConfigs.values()) {
            if (wekaModelConfig.isDirty() && wekaModelConfig.getModelConfig().isStoreModel()) {
                try {
                    String modelConfigJson = mapper.writeValueAsString(wekaModelConfig.getModelConfig());

                    // create a new file because this model has never been written
                    if (wekaModelConfig.getHeader() == null) {
                        File file = File.createTempFile(wekaModelConfig.getId().toString(), "." + WekaManagerConfig.HEADER_EXTENSION, wekaManagerConfig.getHeaderLocation());
                        wekaModelConfig.setHeader(file);
                    }

                    FileUtils.write((wekaModelConfig).getHeader(), modelConfigJson);
                    wekaModelConfig.setDirty(false /* contents have been updated so the model is no longer dirty*/);
                } catch (IOException e) {
                    logger.error("Could not store configuration for model '{}' (will continue to save others)", wekaModelConfig.getId(), e);
                }
            }
        }
    }
private synchronized void saveConfiguration() {
        for (WekaModelConfig wekaModelConfig : modelConfigs.values()) {
            if (wekaModelConfig.isDirty() && wekaModelConfig.getModelConfig().isStoreModel()) {
                try {
                    String modelConfigJson = mapper.writeValueAsString(wekaModelConfig.getModelConfig());

                    // create a new file because this model has never been written
                    if (wekaModelConfig.getHeader() == null) {
                        File file = File.createTempFile(wekaModelConfig.getId().toString(), "." + WekaManagerConfig.HEADER_EXTENSION, wekaManagerConfig.getHeaderLocation());
                        wekaModelConfig.setHeader(file);
                    }

                    FileUtils.write((wekaModelConfig).getHeader(), modelConfigJson);
                    wekaModelConfig.setDirty(false /* contents have been updated so the model is no longer dirty*/);
                } catch (IOException e) {
                    logger.error("Could not store configuration for model '{}' (will continue to save others)", wekaModelConfig.getId(), e);
                }
            }
        }
    }
Save dirty configurations to disk.
<p/> If saving configuration was not possible, a log is produced but no exception is thrown.