Ast_helper.VbValue bindings
Value bindings
val mk : 
  ?loc:Astlib.Location.t ->
  ?attrs:Astlib.Ast_500.Parsetree.attribute list ->
  Astlib.Ast_500.Parsetree.pattern ->
  Astlib.Ast_500.Parsetree.expression ->
  Astlib.Ast_500.Parsetree.value_binding