[bugfix] Rename Module def layers to moduleLayers

core/src/main/scala/chisel3/Module.scala

@@ -1081,7 +1081,7 @@ package experimental {
       *
       * This requires that the module is closed.
       */
-    private[chisel3] def layers: Seq[Layer] = {
+    private[chisel3] def _moduleLayers: Seq[Layer] = {
       require(isClosed, "Can't get layers before module is closed")
       if (_layers == null) {
         throw new InternalErrorException(

core/src/main/scala/chisel3/experimental/hierarchy/DefinitionClone.scala

@@ -25,6 +25,6 @@ private[chisel3] class DefinitionClone[T <: BaseModule](val getProto: T) extends
   // Necessary for toTarget to work
   private[chisel3] def initializeInParent(): Unit = ()
   // Module name is the same as proto's module name
-  override def desiredName: String = getProto.name
-  override def layers:      Seq[Layer] = getProto.layers
+  override def desiredName:   String = getProto.name
+  override def _moduleLayers: Seq[Layer] = getProto._moduleLayers
 }

core/src/main/scala/chisel3/experimental/hierarchy/InstanceClone.scala

@@ -30,6 +30,6 @@ private[chisel3] final class InstanceClone[T <: BaseModule](val getProto: T, val
   // Instance name is the same as proto's instance name
   override def instanceName = instName()
   // Module name is the same as proto's module name
-  override def desiredName: String = getProto.name
-  override def layers:      Seq[Layer] = getProto.layers
+  override def desiredName:   String = getProto.name
+  override def _moduleLayers: Seq[Layer] = getProto._moduleLayers
 }

core/src/main/scala/chisel3/experimental/hierarchy/ModuleClone.scala

@@ -81,5 +81,5 @@ private[chisel3] class ModuleClone[T <: BaseModule](val getProto: T)(implicit si
     this
   }
 
-  override def layers: Seq[Layer] = getProto.layers
+  override def _moduleLayers: Seq[Layer] = getProto._moduleLayers
 }

core/src/main/scala/chisel3/experimental/hierarchy/core/Instance.scala

@@ -156,7 +156,7 @@ object Instance extends SourceInfoDoc {
           firrtlPorts,
           SpecifiedDirection.Unspecified,
           params,
-          importedDefinition.proto.layers,
+          importedDefinition.proto._moduleLayers,
           // Imported Definitions necessarily don't have external requirements
           Seq.empty
         )
@@ -202,7 +202,7 @@ object Instance extends SourceInfoDoc {
 
     // The definition may have known layers that are not yet known to the
     // Builder.  Add them here.
-    definition.proto.layers.foreach(layer.addLayer)
+    definition.proto._moduleLayers.foreach(layer.addLayer)
 
     new Instance(Clone(clone))
   }