Extend
XDR Source: union ExtendFootprintTTLResult switch (ExtendFootprintTTLResultCode code) { case EXTEND_FOOTPRINT_TTL_SUCCESS: void; case EXTEND_FOOTPRINT_TTL_MALFORMED: case EXTEND_FOOTPRINT_TTL_RESOURCE_LIMIT_EXCEEDED: case EXTEND_FOOTPRINT_TTL_INSUFFICIENT_REFUNDABLE_FEE: void; };