private void ConfigurePartitionKeyJoinEntityType(IConventionSkipNavigation skipNavigation, IConventionEntityTypeBuilder joinEntityTypeBuilder)
{
var principalPartitionKey = skipNavigation.DeclaringEntityType.GetPartitionKeyProperty() !;
var partitionKey = joinEntityTypeBuilder.Property(principalPartitionKey.ClrType, principalPartitionKey.Name) !.Metadata;
joinEntityTypeBuilder.HasPartitionKey(partitionKey.Name);
CreateSkipNavigationForeignKey(skipNavigation, joinEntityTypeBuilder, partitionKey);
CreateSkipNavigationForeignKey(skipNavigation.Inverse !, joinEntityTypeBuilder, partitionKey);
}