How add comments into xsd file

Hi

I'm usimg XmlSchemaSequence's object to build my xsd file.

Example:
XmlSchemaSequence xmlSequenceNode = new XmlSchemaSequence();
{...}
XmlSchemaElement nodeElement = new XmlSchemaElement();
nodeElement.Name = elementName;
nodeElement.SchemaTypeName = new XmlQualifiedName(elementType);
xmlSequenceNode .Items.Add(nodeElement);

Which XmlSchema object I need to used to generate comment s into my xsd file (Ex.:)?

Thanks.