class TrustyCms::Extension

def extension_enabled?(extension)

end
ThirdPartyExtension.extend(MyExtension::IntegrationPoints)
if MyExtension.extension_enabled?(:third_party)

Determine if another extension is installed and up to date. 
def extension_enabled?(extension)
  begin
    extension = (extension.to_s.camelcase + 'Extension').constantize
    extension.enabled?
  rescue NameError
    false
  end
end