anchor.diff:  schema of the loaded DataFrame as shown in listing 7.2:
   
   .Printing the schema of our data
  -[source,scala]
  +[subs="specialcharacters,quotes"]
   ----
   events.printSchema()
   
  
positive.code: //  |    |-- avatar_url: string (nullable = true)
  //  |    |-- gravatar_id: string (nullable = true)
  //  |    |-- id: long (nullable = true)
  //  |    |-- [yellow-background]#login: string (nullable = true)#
  // ...
  //  |-- [yellow-background]#payload: struct (nullable = true)#
  // ...
  //  |-- [yellow-background]#type: string (nullable = true)#
  ----
  
  The schema is huge because it is the result of the union of each different
  
negative.code: [source,json]
  ----
  {
    "action": "created",
    "issue": {
      "url": // ...
    }
  