Feature Request: ST_SymDifference scalar function

[oglego]

Description

It looks like there are implementations of ST_Intersection, ST_Union, and ST_Difference, but I didn't see anything for ST_SymDifference

ST_SymDifference can be determined using the below logical equivalence:

$A \Delta B = (A \cup B) \setminus (A \cap B)$

I'd be interested in trying to implement this if having the ST_SymDifference would be beneficial?

Thanks in advance for any feedback on this I really appreciate it!