spine-runtimes/spine-unity/Assets/spine-unity/Mesh Generation/Simple/ISimpleMeshGenerator.cs

namespace Spine.Unity { 
	// Typically, each ISpineMeshGenerator implementation will handle double-buffering meshes, handling any other optimization behavior
	// and operating on assumptions (eg, only handling one skeleton, not updating triangles all the time).
	// The Scale property allows generated mesh to match external systems like Canvas referencePixelsPerUnit

	public interface ISimpleMeshGenerator {
		float Scale { set; }
		UnityEngine.Mesh GenerateMesh (Spine.Skeleton skeleton);
		UnityEngine.Mesh LastGeneratedMesh { get; }
	}
}