Boo.Lang.Compiler.TypeSystem.CallableResolutionService.GetParameterTypeTemplate C# (CSharp) Method

        private IType GetParameterTypeTemplate(Candidate candidate, int position)
        {
            // Get the method this candidate represents, or its generic template
            IMethod method = candidate.Method;
            if (candidate.Method.DeclaringType.ConstructedInfo != null)
            {
                method = candidate.Method.DeclaringType.ConstructedInfo.GetMethodTemplate(method);
            }

            if (candidate.Method.ConstructedInfo != null)
            {
                method = candidate.Method.ConstructedInfo.GenericDefinition;
            }

            // If the parameter is the varargs parameter, use its element type
            IParameter[] parameters = method.GetParameters();
            if (candidate.Expanded && position >= parameters.Length)
            {
                return parameters[parameters.Length - 1].Type.GetElementType();
            }

            // Otherwise use the parameter's original type
            return parameters[position].Type;
        }