def loaded_plugin(namespace, plugin_type, provider)
    get([ :load_info, namespace, sanitize_id(plugin_type), sanitize_id(provider) ], nil)
  end
def loaded_plugin(namespace, plugin_type, provider)
    get([ :load_info, namespace, sanitize_id(plugin_type), sanitize_id(provider) ], nil)
  end
Return the load information for a specified plugin provider if it exists

 * *Parameters*
   - [String, Symbol] *namespace*  Namespace that contains plugin types
   - [String, Symbol] *plugin_type*  Plugin type name of provider
   - [String, Symbol] *provider*  Plugin provider to return load information

 * *Returns*
   - [nil, Hash<Symbol|ANY>]  Returns provider load information if provider exists, nil otherwise

 * *Errors*

 See:
 - Nucleon::Config#get

 See also:
 - #sanitize_id