[mono-cecil] Why return value of "ModuleDefinition::Import(TypeReference tf)" is needed?

[zertsekel]

Hi all,
Please consider the below code I see in some project:
    TypeReference tr0 = new TypeReference(...);
    TypeReference tr1 = assembly.MainModule.Import(rt0);
In the VC2008 debugger I see no difference between tr0 and tr1.
Is this a correct usage of ModuleDefinition::Import()?
Thanks, Kosta.

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mono-cecil