[Converter] spec-text default methofs of interfaces
@@ -1211,7 +1211,8 @@ boolean val2 = cfg.my_other_value(); // val2=true
another map-like type. The name of each method without parameters
is taken as key, taking into account the <xref
linkend="util.converter-key.mapping"/>. The method is invoked
- using reflection to produce the associated value.</para>
+ using reflection to produce the associated value. Default methods
+ must also be handled by the converter.</para>
<para>Whether a conversion source object is an interface is
determined dynamically. When an object implements multiple
