Added explicit warning (CS1030) to expected warnings list.
MODIFY
src/Chapter04/Chapter04.csproj
src/Chapter04/Chapter04.csproj
<!-- CA1052: Suggest Program is static which hasn't been explained yet. -->
<!-- IDE0059: Unnecessary assignment of a value ignored since listing is not complete. -->
<!-- IDE0060: Remove unused parameter suggestion ignored since listing is not complete -->
- <ExpectedWarnings>$(ExpectedWarnings),CA1052,IDE0059,IDE0060</ExpectedWarnings>
+ <ExpectedWarnings>$(ExpectedWarnings),CA1052,IDE0059,IDE0060,CS1030</ExpectedWarnings>
</PropertyGroup>
<Import Project="..\Chapter.props" />
<ItemGroup>

Added explicit warning (CS1030) to expected warnings list.