src/solaris/classes/sun/nio/fs/UnixFileSystemProvider.java

*** 507,512 ****
--- 507,536 ----
                  return null;
              }
          };
      }
  
+     /**
+      * It accepts a list of file type detectors as the parameter, and return
+      * the first {@code FileTypeDetector} that can find a file's MIME type.
+      * If no detectors can find the MIME type, null is returned.
+      *
+      * @param detectors List of file type detectors.
+      * @return The first detector that finds the file type or null.
+      */
+     final FileTypeDetector chain(final AbstractFileTypeDetector... detectors) {
+         return new AbstractFileTypeDetector() {
+             @Override
+             protected String implProbeContentType(Path file)
+                     throws IOException
+             {
+                 for (AbstractFileTypeDetector detector : detectors) {
+                     String result = detector.implProbeContentType(file);
+                     if (result != null && !result.isEmpty()) {
+                         return result;
+                     }
+                 }
+                 return null;
+             }
+         };
+     }
  }