Reduce the number of visible fields, as Windows has a limit of 64k pu…

…blic symbols and we were blowing those out

Generator/Generator/MethodGen.swift

@@ -90,16 +90,17 @@ func methodGen (_ p: Printer, method: MethodDefinition, className: String, cdef:
     let instanceOrStatic = method.isStatic || asSingleton ? " static" : ""
     var inline = ""
     if let methodHash = method.hash {
+        let staticVarVisibility = if bindName != "method_get_class" { "fileprivate " } else { "" }
         assert (!method.isVirtual)
         switch kind {
         case .class:
-            p ("static var \(bindName): GDExtensionMethodBindPtr =", suffix: "()") {
+            p ("\(staticVarVisibility)static var \(bindName): GDExtensionMethodBindPtr =", suffix: "()") {
                 p ("let methodName = StringName (\"\(method.name)\")")
 
                 p ("return gi.classdb_get_method_bind (UnsafeRawPointer (&\(className).className.content), UnsafeRawPointer (&methodName.content), \(methodHash))!")
             }
         case .utility:
-            p ("static var \(bindName): GDExtensionPtrUtilityFunction =", suffix: "()") {
+            p ("\(staticVarVisibility)static var \(bindName): GDExtensionPtrUtilityFunction =", suffix: "()") {
                 p ("let methodName = StringName (\"\(method.name)\")")
 
                 p ("return gi.variant_get_ptr_utility_function (UnsafeRawPointer (&methodName.content), \(methodHash))!")