Trying to extend Chef::Node::ImmutableMash with a to_hash_deep method in order to print out nested Mash data using knife exec

knife_exec_to_hash_deep.txt

knife exec -E " require 'chef'; require 'chef/node/immutable_collections'; class Chef;  class Node; class ImmutableMash < Mash;   def to_hash_deep;    h = Hash.new;    each_pair do |k,v|;      v.respond_to?(:to_hash_deep) ? h[k] = v.to_hash_deep : h[k] = v;    end;    h;  end; end; end; end;  nodes.transform(:all) {|n| puts n['sudo'].to_hash_deep unless n['sudo'].nil? }" -VV
DEBUG: Signing the request as jcuzella
DEBUG: Sending HTTP Request via GET to chef-server.example.com:443/search/node
DEBUG: ---- HTTP Status and Header Data: ----
DEBUG: HTTP 1.1 200 OK
DEBUG: server: nginx/1.2.3
DEBUG: date: Wed, 31 Jul 2013 18:03:00 GMT
DEBUG: content-type: application/json
DEBUG: transfer-encoding: chunked
DEBUG: connection: close
DEBUG: x-ops-api-info: flavor=osc;version=11.0.2;erchef=1.2.6
DEBUG: content-encoding: gzip
DEBUG: ---- End HTTP Status/Header Data ----
DEBUG: decompressing gzip response
/Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/node/immutable_collections.rb:157:in `method_missing': Undefined method or attribute `to_hash_deep' on `node' (NoMethodError)
    from -E Argument:in `block in run'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/shell/model_wrapper.rb:69:in `block in transform'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/shell/model_wrapper.rb:68:in `each'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/shell/model_wrapper.rb:68:in `transform'
    from -E Argument:in `run'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/knife/exec.rb:51:in `instance_eval'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/knife/exec.rb:51:in `run'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/knife.rb:466:in `run_with_pretty_exceptions'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/knife.rb:173:in `run'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/lib/chef/application/knife.rb:123:in `run'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/gems/chef-11.6.0/bin/knife:25:in `<top (required)>'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/bin/knife:23:in `load'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/bin/knife:23:in `<main>'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/bin/ruby_noexec_wrapper:14:in `eval'
    from /Users/jcuzella/.rvm/gems/ruby-1.9.3-p392/bin/ruby_noexec_wrapper:14:in `<main>'

to_hash_deep_test.rb

require 'chef'
require 'chef/mash'
require 'chef/node/immutable_collections'

  # Made into one-liners for use with knife exec
  # Trying to output all nested data in a Mash or ImmutableMash
  class Mash < Hash;   def to_hash_deep;    h = Hash.new;    each_pair do |k,v|;      v.respond_to?(:to_hash_deep) ? h[k] = v.to_hash_deep : h[k] = v;    end;    h;  end; end;
  class Chef;  class Node; class ImmutableMash < Mash;   def to_hash_deep;    h = Hash.new;    each_pair do |k,v|;      v.respond_to?(:to_hash_deep) ? h[k] = v.to_hash_deep : h[k] = v;    end;    h;  end; end; end; end;

  m = Chef::Mash.new()
  m[:sudo] = { :groups => [ 'sudo', 'admins' ] }
  puts "Mash: #{m.to_hash_deep}"
  im = Chef::Node::ImmutableMash.new({ :sudo => { :groups => [ 'sudo', 'admins' ] }})
  puts "ImmutableMash: #{im.to_hash_deep}"