diff --git a/src/Microsoft.ML.Transforms/GcnTransform.cs b/src/Microsoft.ML.Transforms/GcnTransform.cs
index 6567f440da..1269acebbd 100644
--- a/src/Microsoft.ML.Transforms/GcnTransform.cs
+++ b/src/Microsoft.ML.Transforms/GcnTransform.cs
@@ -192,7 +192,7 @@ private static VersionInfo GetVersionInfo()
///
/// The objects describing how the transformation is applied on the input data.
///
- public IReadOnlyCollection Columns => _columns.AsReadOnly();
+ internal IReadOnlyCollection Columns => _columns.AsReadOnly();
private readonly LpNormNormalizingEstimatorBase.ColumnOptionsBase[] _columns;
private static (string outputColumnName, string inputColumnName)[] GetColumnPairs(LpNormNormalizingEstimatorBase.ColumnOptionsBase[] columns)
@@ -671,7 +671,7 @@ public enum NormFunction : byte
///
/// Describes base class for one column pair.
///
- public abstract class ColumnOptionsBase
+ internal abstract class ColumnOptionsBase
{
///
/// Name of the column resulting from the transformation of .
@@ -812,7 +812,7 @@ public sealed class LpNormNormalizingEstimator : LpNormNormalizingEstimatorBase
///
/// Describes how the transformer handles one column pair.
///
- public sealed class ColumnOptions : ColumnOptionsBase
+ internal sealed class ColumnOptions : ColumnOptionsBase
{
///
/// Describes how the transformer handles one column pair.
@@ -868,7 +868,7 @@ public sealed class GlobalContrastNormalizingEstimator : LpNormNormalizingEstima
///
/// Describes how the transformer handles one Gcn column pair.
///
- public sealed class ColumnOptions : ColumnOptionsBase
+ internal sealed class ColumnOptions : ColumnOptionsBase
{
///
/// Describes how the transformer handles one Gcn column pair.