[[chef-dev]] Advice on writing an LWRP

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Hello all, 

I am trying to write a LWRP, and following the instructions, have something
basic working, now comes the hard part, making it do what I really want. 

The main problem is I don't want to duplicate code and so want to extend a
Provider that comes with Chef (RemoteFile), but a LWP gets a class dynamically
generated for it. Is there any way to specify that the generated class in a 
LWP
should extend another? I tried just plopping a whole ruby class (partially
included below) in the LWP file, but when run it fails complaining " FATAL:
NameError: uninitialized constant
#<Class:0x1024a9888>::Chef::Provider::RemoteFile" even though I had required 
'chef/provider/remote_file'. 

I can of course copy the methods from File and RemoteFile into my LWP, but I
don't want to do that if I can avoid it. 

Thank you in advance. 
 

Code excerpt mentioned above:

require 'chef/provider/remote_file'
class Chef
  class Provider
    class S3File < Chef::Provider::RemoteFile
    ...
    end
  end
end