UnityEditor.CubemapPreview.InitPreview C# (CSharp) Method

        private void InitPreview()
        {
            if (this.m_PreviewUtility == null)
            {
                PreviewRenderUtility utility = new PreviewRenderUtility {
                    m_CameraFieldOfView = 15f
                };
                this.m_PreviewUtility = utility;
                this.m_Mesh = PreviewRenderUtility.GetPreviewSphere();
            }
        }