Is there a way to only seed DB with initial data if the database exists?

[sambowenhughes]

If my database does not exist I want to seed the DB with my initial data. However if the database does exists I do not want to seed the initial data.

Is there a way I can check if the database exists within MartenDocumentStore?

 public static IDocumentStore CreateDocumentStore(
            string connectionString,
            int connectionLimit = 100) => DocumentStore.For(_ =>
        {
            _.Connection(connectionString);

            // Seed DB with initial data on startup
            _.InitialData.Add(new InitialData(SeedData.Documents));

            _.CreateDatabasesForTenants(c =>
            {
                c.ForTenant()
                    .CheckAgainstPgDatabase()
                    .WithEncoding("UTF-8")
                    .ConnectionLimit(connectionLimit)
                    .OnDatabaseCreated(_ => Logger.LogInformation("Marten: Created database"))
                    .CreatePLV8();
            });

            _.RetryPolicy(ExceptionRetryPolicy.NTimes<NpgsqlException>(
                5,
                ex => ex.IsTransient));

            _.DdlRules.TableCreation = CreationStyle.CreateIfNotExists;
        });