case class getBuildTagsObject(buildTagsProjectId: String)
BuildTagsByProjectId.as(getBuildTagsObject) { pId: getBuildTagsObject => DoSmth } 
val buildTagsByProjectId = path("buildTags" / "projectId" / Segment) & (get | head)

migrating from akka2.3 /spray -> akka2.4/akka.http
error:

[error]  found   : common.objects.databaseMessageType.getBuildTagsObject.type            
[error]  required: akka.http.scaladsl.server.util.ConstructFromTuple[(String,),?]        
[error] buildTagsByProjectId.as(getBuildTagsObject) { pId: getBuildTagsObject => {