duplicati/Duplicati/Library/SourceProviders/SourceProviderModules.cs

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using Duplicati.Library.Interface;

namespace Duplicati.Library.SourceProviders;

/// <summary>
/// Shared list of statically linked source-provider modules
/// </summary>
public static class SourceProviderModules
{
    /// <summary>
    /// The list of all built-in source-provider modules
    /// </summary>
    public static IReadOnlyList<ISourceProviderModule> BuiltInSourceProviderModules => SupportedSourceProviders;

    /// <summary>
    /// Calculate list once and cache it
    /// </summary>
    private static readonly IReadOnlyList<ISourceProviderModule> SupportedSourceProviders = new ISourceProviderModule[] {
        // ... No providers currently implemented
    }
    .Where(x => x != null)
    .ToList();
}