| MapTResult(NullableReadOnlySpanPairTFirst, TSecondMapClassFuncTResult) | Maps a NullableReadOnlySpanPairTFirst, TSecond to another value by applying a function to the contained value, or returns an empty value if there is no value. |
| MapTResult(NullableReadOnlySpanPairTFirst, TSecondMapStructFuncTResult) | Maps a NullableReadOnlySpanPairTFirst, TSecond to another value by applying a function to the contained value, or returns an empty value if there is no value. |
| MapTResultFirst, TResultSecond(NullableReadOnlySpanPairTFirst, TSecondMapReadOnlyFuncTResultFirst, TResultSecond) | Maps a NullableReadOnlySpanPairTFirst, TSecond to another value by applying a function to the contained value, or returns an empty value if there is no value. |