attributes.cs:
#   10| [Attribute] [AssemblyTitle(...)]
#   10|   0: [StringLiteral] "C# attributes test"
#   11| [Attribute] [AssemblyDescription(...)]
#   11|   0: [StringLiteral] "A test of C# attributes"
#   12| [Attribute] [AssemblyConfiguration(...)]
#   12|   0: [StringLiteral] ""
#   13| [Attribute] [AssemblyCompany(...)]
#   13|   0: [StringLiteral] "Semmle Plc"
#   14| [Attribute] [AssemblyProduct(...)]
#   14|   0: [StringLiteral] "Odasa"
#   15| [Attribute] [AssemblyCopyright(...)]
#   15|   0: [StringLiteral] "Copyright � Semmle 2018"
#   16| [Attribute] [AssemblyTrademark(...)]
#   16|   0: [StringLiteral] ""
#   17| [Attribute] [AssemblyCulture(...)]
#   17|   0: [StringLiteral] ""
#   22| [Attribute] [ComVisible(...)]
#   22|   0: [BoolLiteral] false
#   25| [Attribute] [Guid(...)]
#   25|   0: [StringLiteral] "2f70fdd6-14aa-4850-b053-d547adb1f476"
#   37| [Attribute] [AssemblyVersion(...)]
#   37|   0: [StringLiteral] "1.0.0.0"
#   38| [Attribute] [AssemblyFileVersion(...)]
#   38|   0: [StringLiteral] "1.0.0.0"
#   41| [Class] Foo
#-----|   0: (Attributes)
#   40|     1: [Attribute] [AttributeUsage(...)]
#   40|       0: [MemberConstantAccess] access to constant All
#   40|         -1: [TypeAccess] access to type AttributeTargets
#-----|   3: (Base types)
#   41|     0: [Class] Attribute
#   44|   5: [Method] foo
#-----|     0: (Attributes)
#   43|       1: [Attribute] [Conditional(...)]
#   43|         0: [StringLiteral] "DEBUG2"
#   44|     4: [BlockStmt] {...}
#   47| [Class] Bar
#   49|   5: [Method] inc
#-----|     2: (Parameters)
#   49|       0: [Parameter] x
#-----|         0: (Attributes)
#   49|           1: [Attribute] [Foo(...)]
#   49|     4: [BlockStmt] {...}
#   49|       0: [ReturnStmt] return ...;
#   49|         0: [AddExpr] ... + ...
#   49|           0: [ParameterAccess] access to parameter x
#   49|           1: [IntLiteral] 1
#   52|   6: [Method] M1
#-----|     0: (Attributes)
#   51|       1: [Attribute] [My(...)]
#   51|         0: [BoolLiteral] false
#   52|     4: [BlockStmt] {...}
#   55|   7: [Method] M2
#-----|     0: (Attributes)
#   54|       1: [Attribute] [My(...)]
#   54|         0: [BoolLiteral] true
#   54|         1: [StringLiteral] ""
#   54|         2: [IntLiteral] 0
#   55|     4: [BlockStmt] {...}
#   58| [Class] MyAttribute
#-----|   3: (Base types)
#   58|     0: [Class] Attribute
#   60|   4: [Field] x
#   61|   5: [IndexerProperty] y
#   61|     3: [Getter] get_y
#   61|     4: [Setter] set_y
#-----|       2: (Parameters)
#   61|         0: [Parameter] value
#   62|   6: [InstanceConstructor] MyAttribute
#-----|     2: (Parameters)
#   62|       0: [Parameter] b
#   62|     4: [BlockStmt] {...}