in service/src/main/java/org/apache/fineract/cn/customer/rest/controller/DocumentsRestController.java [298:304]
private void throwIfInvalidContentType(final String contentType) {
if(!contentType.contains(MediaType.IMAGE_JPEG_VALUE)
&& !contentType.contains(MediaType.IMAGE_PNG_VALUE)) {
throw ServiceException.badRequest("Image has contentType ''{0}'', but only content types ''{1}'' and ''{2}'' allowed.",
contentType, MediaType.IMAGE_JPEG_VALUE, MediaType.IMAGE_PNG_VALUE);
}
}