def map_creator
      creator = []
      ttl_data[0][@osf_map['hasContributor']].each do |contributor|
        # Looping through the primary document and the contributors
        ttl_data.each do |item|
          next unless item['@id'] == contributor['@id']
          if item[@osf_map['isBibliographic']][0]['@value'] == 'true'
            creator.push map_user_from_ttl(item[@osf_map['hasUser']][0]['@id'])
          end
        end
      end
      creator
    end
def map_creator
      creator = []
      ttl_data[0][@osf_map['hasContributor']].each do |contributor|
        # Looping through the primary document and the contributors
        ttl_data.each do |item|
          next unless item['@id'] == contributor['@id']
          if item[@osf_map['isBibliographic']][0]['@value'] == 'true'
            creator.push map_user_from_ttl(item[@osf_map['hasUser']][0]['@id'])
          end
        end
      end
      creator
    end
sets the creator- needs to read another ttl for the User data
 only contrubutors with isBibliographic true are considered