has many generator progress

include/matador/utils/primary_key_accessor.hpp

@@ -25,7 +25,7 @@ public:
   static void on_base(const BaseType&) {}
   template<typename PrimaryKeyType>
   void on_primary_key(const char * /*id*/, PrimaryKeyType &pk, const primary_key_attribute & = DefaultPkAttributes) {
-    const auto value = pk_.as<PrimaryKeyType>();
+    const auto value = pk_.convert<PrimaryKeyType>();
     if (!value) {
       // Todo: throw error
     }

include/matador/utils/primary_key_attribute.hpp

@@ -48,7 +48,10 @@ private:
 };
 
 const primary_key_attribute DefaultPkAttributes {};
+const primary_key_attribute Manual {generator_type::Manual};
 const primary_key_attribute Identity {generator_type::Identity};
+const primary_key_attribute Sequence {generator_type::Sequence};
+const primary_key_attribute Table {generator_type::Table};
 const primary_key_attribute ManualVarChar63 {63};
 const primary_key_attribute ManualVarChar127 {127};
 const primary_key_attribute ManualVarChar255 {255};