Message in Spanish (Español)
<var>X</var> no es GenericTypeDefinition. Es posible que sólo se llame a MakeGenericType en un tipo para el que Type.IsGenericTypeDefinition es true.
Unlocalized message
<var>X</var> is not a GenericTypeDefinition. MakeGenericType may only be called on a type for which Type.IsGenericTypeDefinition is true.
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