code: protected void applyParseHandlers() {
      sequenceFlows = new HashMap<String, SequenceFlow>();
      for (Process process : bpmnModel.getProcesses()) {
        currentProcess = process;
        if (process.isExecutable()) {
          bpmnParserHandlers.parseElement(this, process);
        }
      }
    }
docs: Parses the 'definitions' root element