In this lesson we'll continue to add field mappings to the basic migration class created in the previous lesson. We'll see how to add more information about the available source fields. We'll map more of the player source data fields to their equivalent destination fields and learn about some of the many ways that fields can be mapped. Finally we'll also cover mapping sub-fields which allows us to import data for things like the text format of a node's body field or the alt column in an image field. Information that's contained within a meta field.