I have created a custom webform handler by extending WebformHandlerBase. And I can get the data from the WebformSubmission. However, I can only get the machine name of the field. I would like to get field label. For instance, I get "fname" machine name as the key, but I want to get "First Name" or what ever label is set in the admin for this webform.
Does anyone know how I might get to that information from a webform submission entity?