FFTHalfStageImpl

abstract def createLogic(attr: Attributes): NodeImpl[FanInShape4[BufD, BufI, BufI, BufI, BufD]]

We ensure that we use the more specific implementation class, because it registers with the control.

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def addAttributes(attr: Attributes): akka.stream.Graph[FanInShape4[BufD, BufI, BufI, BufI, BufD], NotUsed]

final def asInstanceOf[T0]: T0

def async: akka.stream.Graph[FanInShape4[BufD, BufI, BufI, BufI, BufD], NotUsed]

def clone(): AnyRef

final def connect(in: OutD, size: OutI, padding: OutI, mode: OutI)(implicit b: Builder): OutD

final def createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, NotUsed)

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

def initialAttributes: Attributes

final def isInstanceOf[T0]: Boolean

final lazy val module: Module

final val name: String

def named(name: String): akka.stream.Graph[FanInShape4[BufD, BufI, BufI, BufI, BufD], NotUsed]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final val shape: FanInShape4[BufD, BufI, BufI, BufI, BufD]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

final def withAttributes(attr: Attributes): akka.stream.Graph[FanInShape4[BufD, BufI, BufI, BufI, BufD], NotUsed]