Add JacksonException.initCause() convenience method

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/core/JacksonException.java

@@ -9,7 +9,7 @@
 public abstract class JacksonException
     extends RuntimeException
 {
-    private final static long serialVersionUID = 123; // eclipse complains otherwise
+    private final static long serialVersionUID = 3L; // eclipse complains otherwise
 
     protected JsonLocation _location;
 
@@ -36,6 +36,12 @@ protected JacksonException(String msg, JsonLocation loc, Throwable rootCause) {
         _location = (loc == null) ? JsonLocation.NA : loc;
     }
 
+    // @since 3.0
+    public JacksonException withCause(Throwable cause) {
+        initCause(cause);
+        return this;
+    }
+
     /**
      * Method that allows to remove context information from this exception's message.
      * Useful when you are parsing security-sensitive data and don't want original data excerpts

src/main/java/com/fasterxml/jackson/core/util/SimpleStreamWriteContext.java

@@ -190,7 +190,7 @@ private final void _checkDup(DupDetector dd, String name) throws StreamWriteExce
                     "Duplicate Object property \""+name+"\"");
         }
     }
-    
+
     public boolean writeValue() {
         // Only limitation is with OBJECTs:
         if (_type == TYPE_OBJECT) {