private static Map loadPropertiesFromConfigurationFile(final File filePath) throws IOException {
        val p = new Properties();
        try (val f = Files.newBufferedReader(filePath.toPath(), StandardCharsets.UTF_8)) {
            p.load(f);
        }
        return p;
    }
Add properties to configuration.

@param file  the file
@param group the group
@throws Exception the exception
support/cas-server-support-shell-core/src/main/java/org/apereo/cas/shell/commands/properties/AddPropertiesToConfigurationCommand.java