private NumberingDefinitionsPart FindOrCreateNumberingDefinitionPart(MainDocumentPart mainDocumentPart)
{
NumberingDefinitionsPart result = null;
var existingDefinitions = mainDocumentPart.GetPartsOfType<NumberingDefinitionsPart>();
foreach (NumberingDefinitionsPart existingDefinition in existingDefinitions)
{
result = existingDefinition;
}
if (result == null)
result = mainDocumentPart.AddNewPart<NumberingDefinitionsPart>();
return result;
}
