Allow overriding C# method modifiers #681
Description
A C# method modifier are the keywords which can be applied to a method, such as visibility (public, private, …).
Some of these modifiers can be overridden via metadata, e.g. setting //method/@visibility will be inserted as-is into the C# binding.
What is desired is a way to override the default logic for emitting virtual & override.
Sometimes when binding a library, the default logic causes virtual to be emitted when override is needed for the code to compile. (TODO: Insert concrete example here.)
The current workaround is to use metadata to rename the "offending" method and then use a partial class to properly override the method.
What we would like is e.g. a managedOverride attribute in metadata/on //method.
Question: what should the semantics be? Would a "boolean" attribute be desirable, or a string?
<!-- boolean? -->
<attr path="//method[@name='example']" name="managedOverride">true</attr>
<!-- string? -->
<attr path="//method[@name='example']" name="managedOverride">override</attr>