refactor to use exception helper factories

src/multi/generic_multiple_barcode_reader.rs

@@ -56,7 +56,7 @@ impl<T: Reader> MultipleBarcodeReader for GenericMultipleBarcodeReader<T> {
         let mut results = Vec::new();
         self.doDecodeMultiple(image, hints, &mut results, 0, 0, 0);
         if results.is_empty() {
-            return Err(Exceptions::NotFoundException(None));
+            return Err(Exceptions::notFoundEmpty());
         }
         Ok(results)
     }

src/multi/qrcode/detector/multi_detector.rs

@@ -53,7 +53,7 @@ impl<'a> MultiDetector<'_> {
         let infos = finder.findMulti(hints)?;
 
         if infos.is_empty() {
-            return Err(Exceptions::NotFoundException(None));
+            return Err(Exceptions::notFoundEmpty());
         }
 
         let mut result = Vec::new();

src/multi/qrcode/detector/multi_finder_pattern_finder.rs

@@ -93,9 +93,9 @@ impl<'a> MultiFinderPatternFinder<'_> {
 
         if size < 3 {
             // Couldn't find enough finder patterns
-            return Err(Exceptions::NotFoundException(Some(
+            return Err(Exceptions::notFound(
                 "Couldn't find enough finder patterns".to_owned(),
-            )));
+            ));
         }
 
         /*
@@ -212,7 +212,7 @@ impl<'a> MultiFinderPatternFinder<'_> {
         if !results.is_empty() {
             Ok(results)
         } else {
-            Err(Exceptions::NotFoundException(None))
+            Err(Exceptions::notFoundEmpty())
         }
     }
 

src/multi/qrcode/qr_code_multi_reader.rs

@@ -111,7 +111,7 @@ impl MultipleBarcodeReader for QRCodeMultiReader {
                 // ignore and continue
                 continue;
             } else {
-                return Err(output.err().unwrap_or(Exceptions::NotFoundException(None)));
+                return Err(output.err().unwrap_or(Exceptions::notFoundEmpty()));
             }
         }