wyan0220/cloud-management — comment on commit 2977d0570ca8772b67d640a47430aad8b239ddeb
File: src/main/java/com/proofpoint/cloudmanagement/service/TagResource.java line 35
By mattstep:

Since the tags can be added/removed independent of eachother (say you have 3 tags, you only really care about working with one at a time), so it might be best to do something like an empty put or delete to /v1/instance/"instance_id"/tag/"tag_name"