def edit(name)
      Editor.new(Looksee.editor).edit(lookup_path.object, name)
    end
def edit(name)
      Editor.new(Looksee.editor).edit(lookup_path.object, name)
    end
Open an editor at the named method's definition.

 Uses Looksee.editor to determine the editor command to run.

 Only works for methods for which file and line numbers are
 accessible.