This type reference represents a function pointer type. It is a composite of multiple type references, one for the return type and zero or more for the parameter types.
Given the following C code:
void (*FunctionPointer)(int, int);
You can expect the following declaration tree after type reduction has ocurred:
TranslatedStaticField FunctionPointer
Type: FunctionPointerTypeReference FuncPtr(System.Int32, System.Int32) -> void (CXCallingConv_C) ☣
ReturnType: VoidTypeReference void
ParameterTypes[0]: CSharpBuiltinTypeReference System.Int32
ParameterTypes[1]: CSharpBuiltinTypeReference System.Int32
The corresponding C# variable definition is:
delegate* unmanaged[Cdecl]<int, int, void>* FunctionPointer;