<PackageReference Include="Relativity.Productions.SDK" Version="12.1.13" />

IProductionPlaceholderManager

public interface IProductionPlaceholderManager : IDisposable
The interface enables interaction with Relativity Production Placeholders.
Task<int> CreateSingleAsync(int workspaceArtifactID, ProductionPlaceholder placeholder)

Creates a placeholder in the workspace

Task DeleteSingleAsync(int workspaceArtifactID, int placeholderArtifactID)

Deletes a placeholder in the workspace

Task<ProductionPlaceholder> ReadSingleAsync(int workspaceArtifactID, int placeholderArtifactID)

Returns an instance of a placeholder

Task UpdateSingleAsync(int workspaceArtifactID, ProductionPlaceholder placeholder)

Updates a placeholder in the workspace