<PackageReference Include="System.ServiceModel.Primitives" Version="8.1.2" />

System.ServiceModel.Channels.BufferManager

public abstract class BufferManager
namespace System.ServiceModel.Channels { public abstract class BufferManager { protected BufferManager(); public abstract void Clear(); public static BufferManager CreateBufferManager(long maxBufferPoolSize, int maxBufferSize); public abstract void ReturnBuffer(byte[] buffer); public abstract byte[] TakeBuffer(int bufferSize); } }