Version: v0.2.0.

Before:

type I interface {
	A()
	B()

	c()
}

After:

type I interface {
	A()
	B()
	c()
}

Perhaps c shouldn't be grouped together with A and B, since it is unexported?

In the real code that inspired this issue, the c is a “marker method” for members of the “sum type” I, while A and B are methods that return data common to the members of the “sum type”.

^{(I have filed this in the unused repo at first. Apologies for the noise once again.)}