in service/src/main/java/org/apache/fineract/cn/customer/rest/controller/CustomerRestController.java [856:861]
private void throwIfInvalidContentType(final String contentType) {
if(!contentType.contains(MediaType.IMAGE_JPEG_VALUE)
&& !contentType.contains(MediaType.IMAGE_PNG_VALUE)) {
throw ServiceException.badRequest("Only content type {0} and {1} allowed", MediaType.IMAGE_JPEG_VALUE, MediaType.IMAGE_PNG_VALUE);
}
}