[BEAM-12079] Enforce callable destination arg type for WriteToBigQuery schema argument (#14415)
[BEAM-12079] Enforce callable destination arg type for WriteToBigQuery schema argument (#14415)


chamikaramj/beam,robertwb/incubator-beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,chamikaramj/beam,apache/beam,apache/beam,lukecwik/incubator-beam,apache/beam,robertwb/incubator-beam,apache/beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,robertwb/incubator-beam,lukecwik/incubator-beam,chamikaramj/beam,robertwb/incubator-beam,apache/beam,apache/beam,lukecwik/incubator-beam,chamikaramj/beam,robertwb/incubator-beam,apache/beam,robertwb/incubator-beam,apache/beam,robertwb/incubator-beam,chamikaramj/beam,chamikaramj/beam,robertwb/incubator-beam,robertwb/incubator-beam,robertwb/incubator-beam,apache/beam