Can't get IMethodDeclaration via IMethod.GetDeclarations() Follow

There is an IMethod that is {Method:System.Console.WriteLine(System.String value)}. When I call GetDeclarations(), the result is empty.

I expect to get IMethodDeclaration, then get its qualified name of the method (System.Console.WriteLine) via IMethodDeclaration.

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Visual Studio 2017

R# SDK: 2018.1.3