Message in Portuguese (Portugal) (Português (Portugal))
Tem de implementar o método Add(<var>Y</var>) em <var>X</var> uma vez que é herdado de <var>Z</var>.
Unlocalized message
To be XML serializable, types which inherit from <var>Z</var> must have an implementation of Add(<var>Y</var>) at all levels of their inheritance hierarchy. <var>X</var> does not implement Add(<var>Y</var>).
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