code: function getIncludesArray (query) {
    var relationships = query.include.split(',')
  
    return relationships.map(function (val) {
      return val.trim()
    })
  }
docs: Returns an array of relationships to include. Per JSON specification, they will
  be in a comma-separated pattern.
  @public
  @memberOf {RelationshipUtils}
  @param {Object} query
  @return {Array}