constructors/A.java:
#    0| [CompilationUnit] A
#    3|   1: [Class] A
#    4|     3: [Constructor] A
#    4|       5: [BlockStmt] { ... }
#    5|         0: [ThisConstructorInvocationStmt] this(...)
#    5|           0: [IntegerLiteral] 42
#    8|     4: [Constructor] A
#-----|       4: (Parameters)
#    8|         0: [Parameter] i
#    8|           0: [TypeAccess] int
#    8|       5: [BlockStmt] { ... }
#   10|     5: [Method] main
#   10|       3: [TypeAccess] void
#-----|       4: (Parameters)
#   10|         0: [Parameter] args
#   10|           0: [ArrayTypeAccess] ...[]
#   10|             0: [TypeAccess] String
#   10|       5: [BlockStmt] { ... }
#   11|         0: [ExprStmt] <Expr>;
#   11|           0: [ClassInstanceExpr] new A(...)
#   11|             -3: [TypeAccess] A
#   14|     6: [FieldDeclaration] String STATIC, ...;
#   14|       -1: [TypeAccess] String
#   14|       0: [StringLiteral] "static string"
#   15|     7: [FieldDeclaration] String INSTANCE, ...;
#   15|       -1: [TypeAccess] String
#   15|       0: [StringLiteral] "instance string"
#   17|     8: [BlockStmt] { ... }
#   18|       0: [ExprStmt] <Expr>;
#   18|         0: [MethodAccess] println(...)
#   18|           -1: [VarAccess] System.out
#   18|             -1: [TypeAccess] System
#   18|           0: [StringLiteral] "<obinit>"
#   21|     9: [BlockStmt] { ... }
#   22|       0: [ExprStmt] <Expr>;
#   22|         0: [MethodAccess] println(...)
#   22|           -1: [VarAccess] System.out
#   22|             -1: [TypeAccess] System
#   22|           0: [StringLiteral] "<clinit>"