Usage of /tags/{tags}/related GET
Discussion
Returns the tags that are most related to those in {tags}.
Including multiple tags in {tags} is equivalent to asking for "tags related to tag #1 and tag #2" not "tags related to tag #1 or tag #2".
count on tag objects returned is the number of question with that tag that also share all those in {tags}.
{tags} can contain up to 4 individual tags per request.
This method returns a list of tags.
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