what is class member named Void .ctor() in c# . this is appear when i use GetMethods [duplicate]

This question already has an answer here:

• Why is the .ctor() created when I compile C# code into IL? 5 answers

when i use GetType on Class, Void .ctor() is appear on DeclareMembers.

but this class has no member named Void .ctor().

what is Void .ctor()?