I have a set of webapps deployed in Tomcat where each of these apps uses an instrumented library called A, which utilizes the OpenTelemetry SDK. Library A initializes the OTEL SDK using a configuration file, so I have N webapps with N instances of the OTEL SDK initialized. Is it possible to initialize the OTEL SDK once and share this instance between the webapps in the tomcat enviroment ? Or is better to have the OTEL SDK instances separated?