I forgot that when you move a method (one method per file) from one class to another, git recognizes that it is a "rename" so the commit shows up with this info:
rename repository/MonticelloFileTree-Core.tree/{MCFileTreeStWriter => MCFileTreeAbstractStWriter}/initialize.st (74%)
and github diff listing for the commit looks like this[1]
Dale
[1]
https://github.com/dalehenrich/filetree/commit/67d96379dd3b2c67599c9854711bb54c2e06a86d#diff-4