1. Structure of the document:
  2. CALL_EXPRESSION
  3. DOT_EXPRESSION
  4. NAME_EXPRESSION
  5. NAME
  6. NAME_EXPRESSION
  7. NAME
  8. PARAMS
  9. NAME_EXPRESSION
  10. NAME
  11.  
  12. CALL_EXPRESSION
  13. NAME_EXPRESSION
  14. NAME
  15. PARAMS
  16. NAME_EXPRESSION
  17. NAME
  18.  
  19. ASSIGNMENT_EXPRESSION
  20. NAME_EXPRESSION
  21. NAME
  22. NAME_EXPRESSION
  23. NAME