get Max Granularity
Returns the maximum granularity of the events to be logged. Typically, 0 corresponds to the Gradle-generated test suite for the whole test run, 1 corresponds to the Gradle-generated test suite for a particular test JVM, 2 corresponds to a test class, and 3 corresponds to a test method. These values may extend higher if user-defined suites or parameterized test methods are executed. Events from levels higher than the specified granularity will be ignored.
The default granularity is -1, which specifies that test events from only the most granular level should be logged. Setting this value to something lower will cause events from a higher level to be ignored. For example, setting the value to 3 will cause only events from the test method level to be logged and any events from iterations of a parameterized test method will be ignored.
Return
the maximum granularity of the events to be logged