pattern property
For a WebHookFilter that uses EVENT type, a
comma-separated string that specifies one or more events. For example, the
webhook filter PUSH, PULL_REQUEST_CREATED, PULL_REQUEST_UPDATED
allows all push, pull request created, and pull request updated events to
trigger a build.
For a WebHookFilter that uses any of the other filter types, a
regular expression pattern. For example, a WebHookFilter that
uses HEAD_REF for its type and the pattern
^refs/heads/ triggers a build when the head reference is a
branch with a reference name refs/heads/branch-name.
Implementation
final String pattern;