private static void CheckFunction(EdmFunction function)
{
ArgumentValidation.CheckReadOnly((GlobalItem)function, nameof(function));
if (!ArgumentValidation.CheckDataSpace((GlobalItem)function))
{
throw new ArgumentException(Strings.Cqt_Metadata_FunctionIncorrectSpace, nameof(function));
}
if (function.IsComposableAttribute && function.ReturnParameter == null)
{
throw new ArgumentException(Strings.Cqt_Metadata_FunctionReturnParameterNull, nameof(function));
}
if (function.ReturnParameter != null && !ArgumentValidation.CheckDataSpace(function.ReturnParameter.TypeUsage))
{
throw new ArgumentException(Strings.Cqt_Metadata_FunctionParameterIncorrectSpace, "function.ReturnParameter");
}
IList <FunctionParameter> parameters = (IList <FunctionParameter>)function.Parameters;
for (int index = 0; index < parameters.Count; ++index)
{
ArgumentValidation.CheckParameter(parameters[index], StringUtil.FormatIndex("function.Parameters", index));
}
}