Find Relationship From Source To Target

Find whether a particular type of relationship exists from a sourceentity to a target entity. Note, relationships are one way.For example, you can use this method to find whether the current user hasselected a particular page as a favorite (i.e. 'save for later'):`GET /wiki/rest/api/relation/favourite/from/user/current/to/content/123`**[Permissions](https://confluence.atlassian.com/x/_AozKw) required**:Permission to view both the target entity and source entity.