git - What does the author of each method shown by Visual Studio mean?

Question

Visual Studio 2015 shows the author of each method in C# programs, for example

2 references | tom, 100 days ago | 1 author, 1 change
private void MyMethod()
{
}

But Tom said that he didn't write the method, and Visual Studio seemed to have a problem with determining the authors of a method after a merge. Note that we push and pull from a repository on Github.

So what does the author of each method shown by Visual Studio mean?

Answer 1

It shows the last person to make any change to it. Initially, that would be the original author. After that, it's whoever last made any change.