Relativity.Import.V1.Builders.DataSource.IDataSourceSettingsBuilder
Defines methods for creating data source settings based on
data source type - opticon load file or document-level load file.
Creates data source settings with data type set to load file (non image).
For this data type the custom delimiters can be set.
Creates data source settings with data type set to opticon (image import).
For opticon file only default (fixed) delimiters settings are used.