```ruby
require "sparkle_formation"

class SparkleFormation

  # Resources helper
  class Resources

    # Terraform specific resources collection
    class Terraform < Resources

      # String to split for resource namespacing
      RESOURCE_TYPE_NAMESPACE_SPLITTER = ["_"]

      class << self
        include Bogo::Memoization

        # Load the builtin Terraform resources
        #
        # @return [TrueClass]
        def load!
          memoize(:terraform_resources, :global) do
            load(
              File.join(
                File.dirname(__FILE__),
                "terraform_resources.json"
              )
            )
            # NOTE: Internal resource type used for nesting
            register("module",
                     "properties" => [],
                     "full_properties" => {})
            true
          end
        end

        # Auto load data when included
        def included(_klass)
          load!
        end
      end
    end
  end
end
```

Add customized key loader for namespaced file loading
user
```ruby
require "sparkle_formation"

class SparkleFormation

  # Resources helper
  class Resources

    # Terraform specific resources collection
    class Terraform < Resources

      # String to split for resource namespacing
      RESOURCE_TYPE_NAMESPACE_SPLITTER = ["_"]

      class << self
        include Bogo::Memoization

        # Load the builtin Terraform resources
        #
        # @return [TrueClass]
        def load!
          memoize(:terraform_resources, :global) do
            load(
              File.join(
                File.dirname(__FILE__),
                "terraform_resources.json"
              )
            )
            # NOTE: Internal resource type used for nesting
            register("module",
                     "properties" => [],
                     "full_properties" => {})
            true
          end
        end

        # Load namespaced file
        #
        # @param key [String, Symbol]
        # @return [TrueClass]
        def key_loader(key)
          prefix = key.to_s.split("_").first
          memoize("terraform_#{prefix}_resources".to_sym, :global) do
            file_path = File.join(
              File.dirname(__FILE__),
              "terraform_#{prefix}_resources.json"
            )
            load(file_path) if File.exist?(file_path)
            true
          end
        end

        # Auto load data when included
        def included(_klass)
          load!
        end
      end
    end
  end
end
```
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