anchor.diff:  //  |    |-- avatar_url: string (nullable = true)
   //  |    |-- gravatar_id: string (nullable = true)
   //  |    |-- id: long (nullable = true)
  -//  |    |-- [yellow-background]#login: string (nullable = true)#
  +//  |    |-- *login: string (nullable = true)*
   // ...
  -//  |-- [yellow-background]#payload: struct (nullable = true)#
  +//  |-- *payload: struct (nullable = true)*
   // ...
  -//  |-- [yellow-background]#type: string (nullable = true)#
  +//  |-- *type: string (nullable = true)*
  +// ...
   ----
   
   The schema is huge because it is the result of the union of each different
  
positive.code: ----
  {
    "ref": "0.0.1",
    [yellow-background]#"ref_type": "tag"#,
    "master_branch": "master",
    // ...
  }
  
negative.code: schema of the loaded DataFrame as shown in listing 7.2:
  
  .Printing the schema of our data
  [subs="specialcharacters,quotes"]
  ----
  events.printSchema()
  
  