Hello, whiskers. I am trying to contribute this: https://github.com/apache/incubator-openwhisk/pull/4532
At first, I tried to open a base branch and merge all incremental PRs into the branch. And finally mege the base branch into the master after the implementation is done. Surely, reviewers would review all the subsequent PRs and it will be based on SPI and disabled by default at first, there would be no big issue I think. And Markus suggested to incrementally merge all PRs into the master instead of having a big base branch. https://github.com/apache/incubator-openwhisk/pull/4532#issuecomment-508519119 With the former, we don't need to include temporal unused codes but need to include a big possibly disruptive PR at once. With the latter, there will be some temporal unused components in the master at some point, but we can make sure merged codes do not induce any issue. And actually the latter is easier for me as well : ) If we all agree with including the temporal unused codes in the master, I am happy to work in the way Markus suggested. One example of a temporal code is this: https://github.com/apache/incubator-openwhisk/pull/4532/files#diff-1d7110b32c507a6ef4ac956c287e77ebR24 Since there is no other component, the "scheduler" cannot initialize all components in the main function and there is only `println("Hello")` in the initial version of the main function. Please let me know your thoughts. Best regards Dominic