Add below configuration in your sonar properties file

sonar.issue.ignore.block=e1
sonar.issue.ignore.block.e1.beginBlockRegexp=NOSONAR_BEGIN
sonar.issue.ignore.block.e1.endBlockRegexp=NOSONAR_END

and use annotations like this to ignore a specific code block

//NOSONAR_BEGIN

your code

//NOSONAR_END

this is compatible with the latest sonarQube versions i.e. 9.9+.

For more reference: https://docs.communityhealthtoolkit.org/contribute/code/static-analysis/#ignoring-all-rules-for-a-block-of-code