public static OutputFileFormat forValue()

in src/main/java/org/apache/sling/thumbnails/OutputFileFormat.java [50:60]


    public static OutputFileFormat forValue(@NotNull String format) {
        format = format.toUpperCase();
        if ("JPG".equals(format)) {
            format = "JPEG";
        }
        try {
            return Enum.valueOf(OutputFileFormat.class, format);
        } catch (IllegalArgumentException | NullPointerException e) {
            throw new BadRequestException("Could not get valid extension from: " + format);
        }
    }