Source generator fails with entities marked with '@'

[buraktamturk]

Hello,

event is a reserved keyword in c# and because of that we were using at symbol in front of the entity.

public static class EventExtensions
{    
    [Projectable(NullConditionalRewriteSupport = NullConditionalRewriteSupport.Rewrite)]
    public static Event ToEvent(this @event a) => new Event
    {
        id = a.id,
        name = a.name,
        branch = a.branch.ToBranch(),
        logo = a.logo?.ToLogo(),
        rooms = a.rooms
            .Select(a => a.ToRoomBasic())
            .ToList(),
        start_at = a.start_at,
        created_at = a.created_at,
        updated_at = a.updated_at
    };
}

This was working with 4.0.0-preview.4

We have updated the project from .NET 9 to 10 and Projectables to 6.0.4 and now this code causes the source generator to fail and exception on runtime.

exception on runtime:

Unable to resolve generated expression for ProjectName.Query.Projections.UserExtensions.ToUser

warning on build time:

2>CSC: Warning CS8785 : Generator 'ProjectionExpressionGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'ArgumentException' with message 'The hintName 'ProjectName_Query_Projections_EventExtensions_ToEvent_P0_ProjectName_Storage_@event.g.cs' contains an invalid character '@' at position 75. (Parameter 'hintName')'.