Consider setter of effectively private var #35647

Job	Run time
test	1h 13m 20s
test_non_bootstrapped	0s
test_scala2_library_tasty	0s
test_windows_fast	36m 4s
MiMa	10m 38s
test_windows_full	0s
community_build_a	52m 49s
community_build_b	1h 16m 32s
community_build_c	53m 13s
test_java8	0s
test_sbt	20m 54s
build-msi-package	0s
build-sdk-package / build	8m 44s
test-msi-package	0s
build-chocolatey-package / build	18s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 32m 32s

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