Create Relationship

Creates a relationship between two entities (user, space, content). The'favourite' relationship is supported by default, but you can use this methodto create any type of relationship between two entities.For example, the following method creates a 'sibling' relationship betweentwo pieces of content:`GET /wiki/rest/api/relation/sibling/from/content/123/to/content/456`**[Permissions](https://confluence.atlassian.com/x/_AozKw) required**:Permission to access t...