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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
namespace System.Collections.Immutable
{
/// <summary>
/// An internal non-generic interface implemented by <see cref="ImmutableArray{T}"/>
/// that allows for recognition of an <see cref="ImmutableArray{T}"/> instance and access
/// to its underlying array, without actually knowing the type of value
/// stored in it.
/// </summary>
/// <remarks>
/// Casting to this interface requires a boxed instance of the <see cref="ImmutableArray{T}"/> struct,
/// and as such should be avoided. This interface is useful, however, where the value
/// is already boxed and we want to try to reuse immutable arrays instead of copying them.
/// ** This interface is INTENTIONALLY INTERNAL, as it gives access to the inner array. **
/// </remarks>
internal interface IImmutableArray
{
/// <summary>
/// Gets an untyped reference to the array.
/// </summary>
Array? Array { get; }
}
}
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