13   constexpr char Inv = INVALID_BASE64_BYTE;  in decodeBase64Byte()  local
15       Inv, Inv, Inv, Inv, Inv, Inv, Inv, Inv, // ........  in decodeBase64Byte()
16       Inv, Inv, Inv, Inv, Inv, Inv, Inv, Inv, // ........  in decodeBase64Byte()
17       Inv, Inv, Inv, Inv, Inv, Inv, Inv, Inv, // ........  in decodeBase64Byte()
18       Inv, Inv, Inv, Inv, Inv, Inv, Inv, Inv, // ........  in decodeBase64Byte()
19       Inv, Inv, Inv, Inv, Inv, Inv, Inv, Inv, // ........  in decodeBase64Byte()
20       Inv, Inv, Inv, 62,  Inv, Inv, Inv, 63,  // ...+.../  in decodeBase64Byte()
22       60,  61,  Inv, Inv, Inv, 0,   Inv, Inv, // 89...=..  in decodeBase64Byte()
23       Inv, 0,   1,   2,   3,   4,   5,   6,   // .ABCDEFG  in decodeBase64Byte()
26       23,  24,  25,  Inv, Inv, Inv, Inv, Inv, // XYZ.....  in decodeBase64Byte()
27       Inv, 26,  27,  28,  29,  30,  31,  32,  // .abcdefg  in decodeBase64Byte()
33     return Inv;  in decodeBase64Byte()