Add @SuppressWarnings("CheckReturnValue") to prevent error_prone lib errors.
#3807
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…b errors. Signed-off-by: Terence Parr <parrt@antlr.org>
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Ok, I'm merging as hosted CI seems to pass: https://github.com/antlr/antlr4/actions/runs/2821820772 |
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Without this suppression, the https://errorprone.info/ lib complains about ANTLR code.
Signed-off-by: Terence Parr parrt@antlr.org