Hello, I have created a proposal for Apache Beam FN API to support Histogram Style Metrics <https://docs.google.com/document/d/1MtBZYV7NAcfbwyy9Op8STeFNBxtljxgy69FkHMvhTMA/edit#heading=h.c6fjf0g6rsbc>. Which defines a method to collect Histogram style metrics and pass them over the FN API.
Also, I would appreciate it if someone could generate an s.apache.org link for this document? Unless there is some way for me to do it myself. I would love to hear your feedback in order to improve this proposal, please let me know what you think. Thanks for taking a look :) Alex
