Export Datagrid to flat file that doesn't use a comma delimiter

Summary:

I am trying to export data from the Capital Projects reporting cube to a text file, using a DataGrid. The groovy operation to do so is operation.exportDataToFile(dataGrid, sourceFileName). However, this only allows data to be exported with a comma separated delimiter. I want to export data with a different delimiter (example pipe delimiter) because the data itself (certain project properties) have commas. I have been unable to do so. How can this be done?

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