You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: wrapping.rb
    path of file: ./repos/activegraph/lib/active_graph/relationship
    
    the code of the file until where you have to start completion: module ActiveGraph
  module Relationship
    module Wrapping
      class << self
        def wrapper(rel)
          rel.properties.symbolize_keys!
          begin
            most_concrete_class = class_from_type(rel.type).constanti
    
        def wrapper(rel)
          rel.properties.symbolize_keys!
          begin
            most_concrete_class = class_from_type(rel.type).constantize
            return rel unless most_concrete_class < ActiveGraph::Relationship
            most_concrete_class.new
          rescue NameError => e
            raise e unless e.message =~ /(uninitialized|wrong) constant/

            return rel
          end.tap do |wrapped_rel|
            wrapped_rel.init_on_load(rel, rel.start_node_id, rel.end_node_id, rel.type)
          end
        end