https://github.com/kohsuke/github-api/search?utf8=%E2%9C%93&q=%22new+Error%22&type=

In general, this seems to be a bad idea. See also comments in jenkinsci/ghprb-plugin#570. This PR for the GHPRB plugin is left with the dilemma of catching throwable because there's no other choice since this API throws java.lang.Error.

A quote from java.lang.Error javadoc:

An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.

Instead, consider throwing IllegalStateException.