static bool FindDeclaredInterfaces ( const [FMetasoundFrontendDocument](API\Plugins\MetasoundFrontend\FMetasoundFrontendDocument) & InDocument, [TArray](API\Runtime\Core\Containers\TArray)< const [Metasound::Frontend::IInterfaceRegistryEntry](API\Plugins\MetasoundFrontend\Interfaces\IInterfaceRegistryEntry) * > & OutInterfaces )