Use more specific MSBuild property name for dotnet-getdocument (#55958)

Author: captainsafia

src/Tools/Extensions.ApiDescription.Server/src/build/Microsoft.Extensions.ApiDescription.Server.targets

@@ -51,19 +51,19 @@
         Text="OpenAPI document generation is not supported when targeting netcoreapp2.0 or earlier. Disable the feature or move to a later target framework." />
 
     <PropertyGroup>
-      <_Command>dotnet "$(MSBuildThisFileDirectory)../tools/dotnet-getdocument.dll" --assembly "$(TargetPath)"</_Command>
-      <_Command>$(_Command) --file-list "$(_OpenApiDocumentsCache)" --framework "$(TargetFrameworkMoniker)"</_Command>
-      <_Command>$(_Command) --output "$(OpenApiDocumentsDirectory.TrimEnd('\'))" --project "$(MSBuildProjectName)"</_Command>
-      <_Command Condition=" '$(ProjectAssetsFile)' != '' ">$(_Command) --assets-file "$(ProjectAssetsFile)"</_Command>
-      <_Command Condition=" '$(PlatformTarget)' != '' ">$(_Command) --platform "$(PlatformTarget)"</_Command>
-      <_Command Condition=" '$(PlatformTarget)' == '' AND '$(Platform)' != '' ">$(_Command) --platform "$(Platform)"</_Command>
-      <_Command Condition=" '$(RuntimeIdentifier)' != '' ">$(_Command) --runtime "$(RuntimeIdentifier) --self-contained"</_Command>
-      <_Command>$(_Command) $(OpenApiGenerateDocumentsOptions)</_Command>
+      <_DotNetGetDocumentCommand>dotnet "$(MSBuildThisFileDirectory)../tools/dotnet-getdocument.dll" --assembly "$(TargetPath)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand>$(_DotNetGetDocumentCommand) --file-list "$(_OpenApiDocumentsCache)" --framework "$(TargetFrameworkMoniker)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand>$(_DotNetGetDocumentCommand) --output "$(OpenApiDocumentsDirectory.TrimEnd('\'))" --project "$(MSBuildProjectName)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand Condition=" '$(ProjectAssetsFile)' != '' ">$(_DotNetGetDocumentCommand) --assets-file "$(ProjectAssetsFile)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand Condition=" '$(PlatformTarget)' != '' ">$(_DotNetGetDocumentCommand) --platform "$(PlatformTarget)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand Condition=" '$(PlatformTarget)' == '' AND '$(Platform)' != '' ">$(_DotNetGetDocumentCommand) --platform "$(Platform)"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand Condition=" '$(RuntimeIdentifier)' != '' ">$(_DotNetGetDocumentCommand) --runtime "$(RuntimeIdentifier) --self-contained"</_DotNetGetDocumentCommand>
+      <_DotNetGetDocumentCommand>$(_DotNetGetDocumentCommand) $(OpenApiGenerateDocumentsOptions)</_DotNetGetDocumentCommand>
     </PropertyGroup>
 
     <Message Importance="high" Text="%0AGenerateOpenApiDocuments:" />
-    <Message Importance="high" Text="  $(_Command)" />
-    <Exec Command="$(_Command)" LogStandardErrorAsError="true" />
+    <Message Importance="high" Text="  $(_DotNetGetDocumentCommand)" />
+    <Exec Command="$(_DotNetGetDocumentCommand)" LogStandardErrorAsError="true" />
   </Target>
 
   <!-- Unless this is an inner build or default timing is disabled, tie document retrieval into the build. -->