# File lib/rabl/builder.rb, line 92
      def deep_replace_empty_string_values(hash)
        hash.inject({}) do |new_hash, (k, v)|
          new_hash[k] = if v.is_a?(Hash)
            deep_replace_empty_string_values(v)
          else
            (!v.nil? && v != "") ? v : nil
          end

          new_hash
        end
      end