System information

• OS version/distro:
  Windows 10
• .NET Version (eg., dotnet --info):
  Release 1.0.0.0.

Issue

• Related
  Mising code sample #3732

• What did you do?
  Looked for implementations of any samples or tests in regards of how to use the WithOnFitDelegate. I have found none, no unit tests, no samples and not much documentation even though it looks like all networks cal on fit in one way or another.

• What did you expect?
  I expect to find some documentation on the method as it allows on looking at the progress of the model being build