ROOT (token: short_text [lag_newlines/spaces] {pos_id})          
 ¦--expr:  [0/0] {1}                                             
 ¦   ¦--expr:  [0/0] {3}                                         
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: test_ [0/0] {2}                
 ¦   ¦--'(': ( [0/0] {4}                                         
 ¦   ¦--expr:  [0/0] {6}                                         
 ¦   ¦   °--STR_CONST: "this [0/0] {5}                           
 ¦   ¦--',': , [0/1] {7}                                         
 ¦   ¦--expr:  [0/0] {8}                                         
 ¦   ¦   ¦--'{': { [0/2] {9}                                     
 ¦   ¦   ¦--expr:  [1/0] {10}                                    
 ¦   ¦   ¦   ¦--expr:  [0/0] {12}                                
 ¦   ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: test [0/0] {11}        
 ¦   ¦   ¦   ¦--'(': ( [0/0] {13}                                
 ¦   ¦   ¦   ¦--expr:  [0/0] {15}                                
 ¦   ¦   ¦   ¦   °--SYMBOL: x [0/0] {14}                         
 ¦   ¦   ¦   ¦--',': , [0/1] {16}                                
 ¦   ¦   ¦   ¦--expr:  [0/0] {18}                                
 ¦   ¦   ¦   ¦   °--SYMBOL: y [0/0] {17}                         
 ¦   ¦   ¦   ¦--',': , [0/1] {19}                                
 ¦   ¦   ¦   ¦--expr:  [0/0] {20}                                
 ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {22}                            
 ¦   ¦   ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {21}    
 ¦   ¦   ¦   ¦   ¦--'(': ( [0/0] {23}                            
 ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {25}                            
 ¦   ¦   ¦   ¦   ¦   °--SYMBOL: z [0/0] {24}                     
 ¦   ¦   ¦   ¦   °--')': ) [0/0] {26}                            
 ¦   ¦   ¦   °--')': ) [0/0] {27}                                
 ¦   ¦   °--'}': } [1/0] {28}                                    
 ¦   °--')': ) [0/0] {29}                                        
 ¦--expr:  [2/0] {30}                                            
 ¦   ¦--'(': ( [0/0] {31}                                        
 ¦   ¦--expr:  [0/0] {32}                                        
 ¦   ¦   ¦--'(': ( [0/0] {33}                                    
 ¦   ¦   ¦--expr:  [0/0] {34}                                    
 ¦   ¦   ¦   ¦--'{': { [0/0] {35}                                
 ¦   ¦   ¦   ¦--expr:  [0/0] {36}                                
 ¦   ¦   ¦   ¦   ¦--'{': { [0/2] {37}                            
 ¦   ¦   ¦   ¦   ¦--expr:  [1/0] {38}                            
 ¦   ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {40}                        
 ¦   ¦   ¦   ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {39}
 ¦   ¦   ¦   ¦   ¦   ¦--'(': ( [0/4] {41}                        
 ¦   ¦   ¦   ¦   ¦   ¦--expr:  [1/0] {43}                        
 ¦   ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 12 [0/0] {42}             
 ¦   ¦   ¦   ¦   ¦   ¦--',': , [0/1] {44}                        
 ¦   ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {45}                        
 ¦   ¦   ¦   ¦   ¦   ¦   ¦--expr:  [0/1] {47}                    
 ¦   ¦   ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 1 [0/0] {46}          
 ¦   ¦   ¦   ¦   ¦   ¦   ¦--'+': + [0/1] {48}                    
 ¦   ¦   ¦   ¦   ¦   ¦   °--expr:  [0/0] {50}                    
 ¦   ¦   ¦   ¦   ¦   ¦       °--NUM_CONST: 1 [0/0] {49}          
 ¦   ¦   ¦   ¦   ¦   ¦--',': , [0/4] {51}                        
 ¦   ¦   ¦   ¦   ¦   ¦--expr:  [1/0] {53}                        
 ¦   ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 26 [0/0] {52}             
 ¦   ¦   ¦   ¦   ¦   °--')': ) [0/0] {54}                        
 ¦   ¦   ¦   ¦   °--'}': } [1/0] {55}                            
 ¦   ¦   ¦   °--'}': } [0/0] {56}                                
 ¦   ¦   °--')': ) [0/0] {57}                                    
 ¦   °--')': ) [0/0] {58}                                        
 °--expr:  [3/0] {59}                                            
     ¦--'(': ( [0/0] {60}                                        
     ¦--expr:  [0/0] {61}                                        
     ¦   ¦--'(': ( [0/0] {62}                                    
     ¦   ¦--expr:  [0/0] {63}                                    
     ¦   ¦   ¦--'{': { [0/0] {64}                                
     ¦   ¦   ¦--expr:  [0/0] {65}                                
     ¦   ¦   ¦   ¦--'{': { [0/2] {66}                            
     ¦   ¦   ¦   ¦--expr:  [1/0] {67}                            
     ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {69}                        
     ¦   ¦   ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {68}
     ¦   ¦   ¦   ¦   ¦--'(': ( [0/4] {70}                        
     ¦   ¦   ¦   ¦   ¦--expr:  [1/0] {72}                        
     ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 12 [0/0] {71}             
     ¦   ¦   ¦   ¦   ¦--',': , [0/1] {73}                        
     ¦   ¦   ¦   ¦   ¦--expr:  [0/0] {74}                        
     ¦   ¦   ¦   ¦   ¦   ¦--expr:  [0/1] {76}                    
     ¦   ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 1 [0/0] {75}          
     ¦   ¦   ¦   ¦   ¦   ¦--'+': + [0/1] {77}                    
     ¦   ¦   ¦   ¦   ¦   °--expr:  [0/0] {79}                    
     ¦   ¦   ¦   ¦   ¦       °--NUM_CONST: 1 [0/0] {78}          
     ¦   ¦   ¦   ¦   ¦--',': , [0/4] {80}                        
     ¦   ¦   ¦   ¦   ¦--expr:  [1/2] {82}                        
     ¦   ¦   ¦   ¦   ¦   °--NUM_CONST: 26 [0/0] {81}             
     ¦   ¦   ¦   ¦   °--')': ) [1/0] {83}                        
     ¦   ¦   ¦   °--'}': } [1/0] {84}                            
     ¦   ¦   °--'}': } [0/0] {85}                                
     ¦   °--')': ) [0/0] {86}                                    
     °--')': ) [0/0] {87}                                        
