docs: def eventize(self, granularity):
          """ This splits the JSON information found at self.events into the
          several events. For this there are three different levels of time
          consuming actions: 1-soft, 2-medium and 3-hard.
  
          Level 1 provides events about open and closed issues.
          Level 2 provides events about the rest of the status updates.
          Level 3 provides events about the rest of the values in any of the
          fields.
  
          :param granularity: Levels of time consuming actions to calculate events
          :type granularity: integer
  
          :returns: Pandas dataframe with splitted events.
          :rtype: pandas.DataFrame
          """
  
          issue = {}
          issue[BugzillaRest.ISSUE_ID] = []
          issue[BugzillaRest.ISSUE_EVENT] = []
          issue[BugzillaRest.ISSUE_DATE] = []
          issue[BugzillaRest.ISSUE_OWNER] = []
          issue[BugzillaRest.ISSUE_ADDED] = []
          issue[BugzillaRest.ISSUE_REMOVED] = []
  
          events = pandas.DataFrame()
  
          for item in self.items:
              bug_data = item["data"]
              if granularity == 1:
                  # Open Date: filling a new event
                  issue[BugzillaRest.ISSUE_ID].append(bug_data['id'])
                  issue[BugzillaRest.ISSUE_EVENT].append(BugzillaRest.EVENT_OPEN)
                  issue[BugzillaRest.ISSUE_DATE].append(str_to_datetime(bug_data['creation_time']))
                  issue[BugzillaRest.ISSUE_OWNER].append(bug_data['creator_detail']["real_name"])
                  issue[BugzillaRest.ISSUE_ADDED].append("-")
                  issue[BugzillaRest.ISSUE_REMOVED].append("-")
  
                  # Adding the rest of the status updates (if there were any)
                  if 'history' in bug_data.keys():
                      history = bug_data["history"]
                      for step in history:
                          # Filling a new event
                          who = step["who"]
                          when = str_to_datetime(step["when"])
                          changes = step["changes"]
                          for change in changes:
                              issue[BugzillaRest.ISSUE_ID].append(bug_data['id'])
                              issue[BugzillaRest.ISSUE_EVENT].append("ISSUE_" + change["field_name"])
                              issue[BugzillaRest.ISSUE_ADDED].append(change["added"])
                              issue[BugzillaRest.ISSUE_REMOVED].append(change["removed"])
                              issue[BugzillaRest.ISSUE_DATE].append(when)
                              issue[BugzillaRest.ISSUE_OWNER].append(who)
  
              if granularity == 2:
                  # TBD Let's produce an index with all of the changes.
                  #    Let's have in mind the point about having the changes of initiating
                  #    the ticket.
                  pass
  
              if granularity == 3:
                  # TDB
                  pass
  
          # Done in this way to have an order (and not a direct cast)
          events[BugzillaRest.ISSUE_ID] = issue[BugzillaRest.ISSUE_ID]
          events[BugzillaRest.ISSUE_EVENT] = issue[BugzillaRest.ISSUE_EVENT]
          events[BugzillaRest.ISSUE_DATE] = issue[BugzillaRest.ISSUE_DATE]
          events[BugzillaRest.ISSUE_OWNER] = issue[BugzillaRest.ISSUE_OWNER]
          events[BugzillaRest.ISSUE_ADDED] = issue[BugzillaRest.ISSUE_ADDED]
          events[BugzillaRest.ISSUE_REMOVED] = issue[BugzillaRest.ISSUE_REMOVED]
  
          return events