# File lib/gitlab_git/diff.rb, line 176
      def initialize(raw_diff, collapse: false)
        case raw_diff
        when Hash
          init_from_hash(raw_diff, collapse: collapse)
        when Rugged::Patch, Rugged::Diff::Delta
          init_from_rugged(raw_diff, collapse: collapse)
        when nil
          raise "Nil as raw diff passed"
        else
          raise "Invalid raw diff type: #{raw_diff.class}"
        end
      end