public DebuggingSpan createSpanForTransform(String operation) {
        DebuggingSpan span = new DebuggingSpan(spanIdGenerator++, operation);
        if (debug) {
            execTrace.addSpan(span);
        }
        return span;
    }
Use for transform the other Span to DebuggingSpan, such as BanyanDB trace span.
The start time , end time, duration, parent span id should be set manually.
@param operation operation
@return DebuggingSpan
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/type/debugging/DebuggingTraceContext.java