System.Maui.CustomAttributes.csproj

<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>netstandard2.0;netstandard1.0</TargetFrameworks>
  </PropertyGroup>
  
  <PropertyGroup>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <NoWarn>0169</NoWarn>
  </PropertyGroup>
</Project>