enums.cs:
#    5| [NamespaceDeclaration] namespace ... { ... }
#    7|   1: [Enum] Color
#   10|     5: [Field] Red
#   10|     6: [Field] Green
#   10|     7: [Field] Blue
#   14|   2: [Enum] LongColor
#   17|     5: [Field] Red
#   18|     6: [Field] Green
#   19|     7: [Field] Blue
#   23|   3: [Enum] E
#   25|   4: [Enum] ValueColor
#   28|     5: [Field] OneRed
#   28|       1: [AssignExpr] ... = ...
#   28|         0: [MemberConstantAccess] access to constant OneRed
#   28|         1: [CastExpr] (...) ...
#   28|           1: [IntLiteral] 1
#   29|     6: [Field] TwoGreen
#   29|       1: [AssignExpr] ... = ...
#   29|         0: [MemberConstantAccess] access to constant TwoGreen
#   29|         1: [CastExpr] (...) ...
#   29|           1: [IntLiteral] 2
#   30|     7: [Field] FourBlue
#   30|       1: [AssignExpr] ... = ...
#   30|         0: [MemberConstantAccess] access to constant FourBlue
#   30|         1: [CastExpr] (...) ...
#   30|           1: [IntLiteral] 4
#   34|   5: [Enum] SparseColor
#   37|     5: [Field] Red
#   38|     6: [Field] Green
#   38|       1: [AssignExpr] ... = ...
#   38|         0: [MemberConstantAccess] access to constant Green
#   38|         1: [IntLiteral] 10
#   39|     7: [Field] Blue
#   40|     8: [Field] AnotherBlue
#   40|       1: [AssignExpr] ... = ...
#   40|         0: [MemberConstantAccess] access to constant AnotherBlue
#   40|         1: [AddExpr] ... + ...
#   40|           0: [CastExpr] (...) ...
#   40|             1: [MemberConstantAccess] access to constant Blue
#   40|           1: [CastExpr] (...) ...
#   40|             1: [MemberConstantAccess] access to constant Red
#   44|   6: [Class] Test
#   47|     5: [Method] Main
#   47|       -1: [TypeMention] Void
#   48|       4: [BlockStmt] {...}
#   49|         0: [ExprStmt] ...;
#   49|           0: [MethodCall] call to method WriteLine
#   49|             -1: [TypeAccess] access to type Console
#   49|               0: [TypeMention] Console
#   49|             0: [MethodCall] call to method StringFromColor
#   49|               0: [MemberConstantAccess] access to constant Red
#   49|                 -1: [TypeAccess] access to type SparseColor
#   49|                   0: [TypeMention] SparseColor
#   50|         1: [ExprStmt] ...;
#   50|           0: [MethodCall] call to method WriteLine
#   50|             -1: [TypeAccess] access to type Console
#   50|               0: [TypeMention] Console
#   50|             0: [MethodCall] call to method StringFromColor
#   50|               0: [MemberConstantAccess] access to constant Green
#   50|                 -1: [TypeAccess] access to type SparseColor
#   50|                   0: [TypeMention] SparseColor
#   51|         2: [ExprStmt] ...;
#   51|           0: [MethodCall] call to method WriteLine
#   51|             -1: [TypeAccess] access to type Console
#   51|               0: [TypeMention] Console
#   51|             0: [MethodCall] call to method StringFromColor
#   51|               0: [MemberConstantAccess] access to constant Blue
#   51|                 -1: [TypeAccess] access to type SparseColor
#   51|                   0: [TypeMention] SparseColor
#   54|     6: [Method] StringFromColor
#   54|       -1: [TypeMention] string
#-----|       2: (Parameters)
#   54|         0: [Parameter] c
#   54|           -1: [TypeMention] SparseColor
#   55|       4: [BlockStmt] {...}
#   56|         0: [SwitchStmt] switch (...) {...}
#   56|           0: [ParameterAccess] access to parameter c
#   58|           0: [ConstCase] case ...:
#   58|             0: [ConstantPatternExpr,MemberConstantAccess] access to constant Red
#   58|               -1: [TypeAccess] access to type SparseColor
#   58|                 0: [TypeMention] SparseColor
#   58|           1: [ReturnStmt] return ...;
#   58|             0: [MethodCall] call to method Format
#   58|               -1: [TypeAccess] access to type String
#   58|                 0: [TypeMention] string
#   58|               0: [StringLiteral] "Red = {0}"
#   58|               1: [CastExpr] (...) ...
#   58|                 1: [CastExpr] (...) ...
#   58|                   0: [TypeAccess] access to type Int32
#   58|                     0: [TypeMention] int
#   58|                   1: [ParameterAccess] access to parameter c
#   59|           2: [ConstCase] case ...:
#   59|             0: [ConstantPatternExpr,MemberConstantAccess] access to constant Green
#   59|               -1: [TypeAccess] access to type SparseColor
#   59|                 0: [TypeMention] SparseColor
#   59|           3: [ReturnStmt] return ...;
#   59|             0: [MethodCall] call to method Format
#   59|               -1: [TypeAccess] access to type String
#   59|                 0: [TypeMention] string
#   59|               0: [StringLiteral] "Green = {0}"
#   59|               1: [CastExpr] (...) ...
#   59|                 1: [CastExpr] (...) ...
#   59|                   0: [TypeAccess] access to type Int32
#   59|                     0: [TypeMention] int
#   59|                   1: [ParameterAccess] access to parameter c
#   60|           4: [ConstCase] case ...:
#   60|             0: [ConstantPatternExpr,MemberConstantAccess] access to constant Blue
#   60|               -1: [TypeAccess] access to type SparseColor
#   60|                 0: [TypeMention] SparseColor
#   60|           5: [ReturnStmt] return ...;
#   60|             0: [MethodCall] call to method Format
#   60|               -1: [TypeAccess] access to type String
#   60|                 0: [TypeMention] string
#   60|               0: [StringLiteral] "Blue = {0}"
#   60|               1: [CastExpr] (...) ...
#   60|                 1: [CastExpr] (...) ...
#   60|                   0: [TypeAccess] access to type Int32
#   60|                     0: [TypeMention] int
#   60|                   1: [ParameterAccess] access to parameter c
#   61|           6: [DefaultCase] default:
#   61|           7: [ReturnStmt] return ...;
#   61|             0: [StringLiteral] "Invalid color"