private void AddContentModel (DTDContentModelCollection cmc, DTDContentModel cm)
{
if (cm.ElementName != null) {
for (int i = 0; i < cmc.Count; i++) {
if (cmc [i].ElementName == cm.ElementName) {
HandleError (new XmlSchemaException ("Element content must be unique inside mixed content model.",
this.LineNumber,
this.LinePosition,
null,
this.BaseURI,
null));
return;
}
}
}
cmc.Add (cm);
}