```ruby
# Override Chef LWRP creation to remove existing class to avoid redefinition warnings.
class Chef
  class Provider
    class << self
      alias :old_build_from_file :build_from_file

      def build_from_file(cookbook_name, filename, run_context)
        remove_existing_lwrp(convert_to_class_name(filename_to_qualified_string(cookbook_name, filename)))
        old_build_from_file(cookbook_name, filename, run_context)
      end

      # Remove any existing Chef provider or resource with the specified name.
      #
      # @param [String] class_name The class name. Must be a valid constant name.
      def remove_existing_lwrp(class_name)
        [Chef::Resource, Chef::Provider].each do |resource_holder|
          if resource_holder.const_defined? class_name
            resource_holder.send(:remove_const, class_name)
          end
        end
      end

    end
  end
end


```

Use alias_method in preference to alias.
user
```ruby
# Override Chef LWRP creation to remove existing class to avoid redefinition warnings.
class Chef
  class Provider
    class << self
      alias_method :old_build_from_file, :build_from_file

      def build_from_file(cookbook_name, filename, run_context)
        remove_existing_lwrp(convert_to_class_name(filename_to_qualified_string(cookbook_name, filename)))
        old_build_from_file(cookbook_name, filename, run_context)
      end

      # Remove any existing Chef provider or resource with the specified name.
      #
      # @param [String] class_name The class name. Must be a valid constant name.
      def remove_existing_lwrp(class_name)
        [Chef::Resource, Chef::Provider].each do |resource_holder|
          if resource_holder.const_defined? class_name
            resource_holder.send(:remove_const, class_name)
          end
        end
      end

    end
  end
end


```
assistant