Microsoft.DiaSymReader.SymUnmanagedExtensions.GetSequencePoints C# (CSharp) Method

        public static IEnumerable<SymUnmanagedSequencePoint> GetSequencePoints(this ISymUnmanagedMethod method)
        {
            if (method == null)
            {
                throw new ArgumentNullException(nameof(method));
            }

            // NB: method.GetSequencePoints(0, out numAvailable, ...) always returns 0.
            int numAvailable;
            ThrowExceptionForHR(method.GetSequencePointCount(out numAvailable));
            if (numAvailable == 0)
            {
                yield break;
            }

            int[] offsets = new int[numAvailable];
            ISymUnmanagedDocument[] documents = new ISymUnmanagedDocument[numAvailable];
            int[] startLines = new int[numAvailable];
            int[] startColumns = new int[numAvailable];
            int[] endLines = new int[numAvailable];
            int[] endColumns = new int[numAvailable];

            int numRead;
            ThrowExceptionForHR(method.GetSequencePoints(numAvailable, out numRead, offsets, documents, startLines, startColumns, endLines, endColumns));
            ValidateItems(numRead, offsets.Length);

            for (int i = 0; i < numRead; i++)
            {
                yield return new SymUnmanagedSequencePoint(
                    offsets[i],
                    documents[i],
                    startLines[i],
                    startColumns[i],
                    endLines[i],
                    endColumns[i]);
            }
        }