x12 ISA grammar.ComponentDataElementSeparator not serializing

When serializing an x12

The ISA should be termibnated with a > char

grammar.ComponentDataElementSeparator = '>'

However it is omitted:

`ISA*00* *00* *ZZ*DEF *ZZ*ABC *210303*0952*U*00400*000000013*0*T~`

It should be:

`ISA*00* *00* *ZZ*DEF *ZZ*ABC *210303*0952*U*00400*000000013*0*T*>~`

e.g.

Use the PurcahseOrder_850 from the samples

Serialize using:

using (var sw = new StringWriter())
{
using (var ediWriter = new EdiTextWriter(sw, EdiGrammar.NewX12()))
{
var s = new EdiSerializer();

s.Serialize(ediWriter, item);
}

var res = sw.ToString();

return res ;
}

Start with the PurchaseOrder_850 sample and reproduce serialization using EdiTextWriter, EdiGrammar.NewX12(), and EdiSerializer as shown. Compare the generated ISA output with the expected separator-bearing form; done means the component data element separator is serialized in that output.

Written by the indexing model from the issue text.