flatbuffers/tests/evolution_test/evolution_v2.fbs

namespace Evolution.V2;

table TableA {
    b:int (id: 1);      // swapped with 'a'
    a:float (id: 0);    // swapped with 'b'
    c:string (id: 2);   // new in v2
}

table TableB {
    a:int;
}

table TableC {          // new in v2
    a:double;
    b:string;
}

enum Enum : byte {
    King,
    Queen,
    Rook,               // new in v2
    Bishop              // new in v2
}

union Union {
    TableA,
    TableB,
    TableC
}

struct Struct {
    a:int;
    b:double;
}

table Root {
    a:int (deprecated); // deprecated in v2
    b:bool;
    c:Union;
    d:Enum;
    e:TableA;
    ff:Struct;          // renamed from 'f' in v1
    g:[int];
    h:[TableB];
    i:uint = 1234;
    j:Union (deprecated); // deprecated in v2
    k:TableC;           // new in v2
    l:uint8 = 56;       // new in v2
}

root_type Root;