Description

The specification defined a new method SpanProcessor#onEnding() that is supposed to be called just before a Span ends, so that a SpanProcessor can still manipulate the span if needed.

This issue is considered done when:

• an @experimental AND optional SpanProcessor#onEnding() is added to the SpanProcessor interface
• TSdoc has been added to state that this method may change at any time
• the trace SDK has been modified to call this method as according to the specification
• a specification issue for stabilization of this feature in has been created OR updated if it already exists

Additional context:

• SpanProcessor interface
• SpanImpl#onEnd() is where the new method will likely be called.