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+use-default-preference-values
+=============================
+
+Require providing a second parameter to ``get*Pref`` methods instead of
+using a try/catch block.
+
+Examples of incorrect code for this rule:
+-----------------------------------------
+
+.. code-block:: js
+
+ try { blah = branch.getCharPref('blah'); } catch(e) {}
+
+Examples of correct code for this rule:
+---------------------------------------
+
+.. code-block:: js
+
+ blah = branch.getCharPref('blah', true);