[FNodeHandle](API\Plugins\MetasoundFrontend\FNodeHandle) AddInputVertex ( const [FVertexName](API\Plugins\MetasoundGraphCore\FVertexName) & InName, const [FName](API\Runtime\Core\UObject\FName) InTypeName, const [FMetasoundFrontendLiteral](API\Plugins\MetasoundFrontend\FMetasoundFrontendLiteral) * InDefaultValue )