IWriterConfiguration.ReferenceHeaderPrefix equivalent in newer versions of CsvHelper

The usual workflow is to construct an instance of the CsvConfiguration class and pass that into the constructor for the reader or writer. And CsvConfiguration.ReferenceHeaderPrefix does have a set method.

var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
    ReferenceHeaderPrefix = (args) => $"{args.MemberName}_",
};
using (var writer = new StreamWriter("path\\to\\file.csv"))
using (var csv = new CsvWriter(writer, config))
{
    // Write your CSV records here.
    csv.WriteRecords(records);
}   

Note also that, in the current version (27.2.0), the ReferenceHeaderPrefix takes a single ReferenceHeaderPrefixArgs argument, which contains MemberType and MemberName fields:

public readonly struct ReferenceHeaderPrefixArgs
{
  public readonly Type MemberType;

  public readonly string MemberName;

  public ReferenceHeaderPrefixArgs(Type memberType, string memberName)
  {
      MemberType = memberType;
      MemberName = memberName;
  }
}