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When not installing using NuGet, the "Using" drop down is populated with any property collector whose namespace matches the pattern defined by the XUnit Actionaction. The pattern for this action is ^XUnit\..*
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The Using drop down is populated by any property collector properties whose namespace matches the pattern defined by the NuGet Actionaction. The pattern for this action is ^NuGet\..* . The default property collector searches the environment path for "NuGet.exe".
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