https://github.com/dotnet/roslyn/blob/master/src/Workspaces/Core/Portable/CodeGeneration/ICodeGenerationService.cs

https://github.com/dotnet/roslyn/blob/master/src/Workspaces/Core/Portable/CodeGeneration/CodeGenerationSymbolFactory.cs

The API needs to be polished, similar to SyntaxGenerator, and exposed as a new type SymbolGenerator. We also need to remove the duplication between the APIs in SyntaxGenerator and CodeGenerationSymbolFactory that expose similar syntax generation APIs, but latter have more richer options to control the syntax generation.

CodeFixProviders that are blocked from being able to ported to CodeStyle layer due to this functionality:

• MakeLocalFunctionStaticCodeFixProvider
• CSharpUseLocalFunctionCodeFixProvider