Code completion for native OpenSSL extension

Hi

RubyMine3.1 does not provide code completion for Ruby1.9 native OpenSSL extension.
For example, in the code below (Just to read a key file):

require 'openssl'
cakey = OpenSSL::PKey::RSA.new(File.read('cakey.pem'))

I cannot get any suggestion for OpenSSL::P* from RubyMine and it shows the warning "Cannot find 'PKey' for type 'OpenSSL'" with gray wavy underline.
Is it possible to have better understanding for that native extension ?

Thank you,