.NET API Catalog

net9.0
    namespace Microsoft.EntityFrameworkCore
{
    public static class CosmosEntityTypeBuilderExtensions : Object
    {
        public static EntityTypeBuilder<TEntity!>! HasPartitionKey<TEntity>(this EntityTypeBuilder<TEntity!>! entityTypeBuilder, ?? name, params ?![]? additionalPropertyNames)
            where TEntity, class;
    }
}

Information specific to `net9.0`
.NET	8.09.0
Assembly	Microsoft.EntityFrameworkCore.Cosmos , Version=9.0.0.0, PublicKeyToken=adb9793829ddae60
Referencing	Your project needs a package reference to `Microsoft.EntityFrameworkCore.Cosmos`.
Package	Microsoft.EntityFrameworkCore.Cosmos (9.0.0) net8.0
Platform Restrictions	This API is supported on all platforms.

Built-in API
Package-provided API