You can use the “blacklist” feature on the APM settings page to blacklist a namespace, class name or method. There is no limit to the blacklist - you can add as many as you'd like.
This feature is useful because it helps to filter out unwanted data from captured traces, e.g. short running but frequently called helper functions which are already performant, but clog up captured trace data due to being regularly called.
Note: This feature is for namespaces, classnames and methods only with no wildcard support.