json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "required": [
          "@id",
          "name",
          "description",
          "version",
          "plugin_type"
      ],
      "properties": {
          "@id": {
              "type": "string",
              "description": "Unique identifier for the plugin, usually comprised of the name of the plugin and the version."
          },
          "name": {
              "type": "string",
              "description": "The name of the plugin, which will be used in the algorithm detection phase."
          },
          "description": {
              "type": "string",
              "description": "A summary of what the plugin does, and pointers to further information."
          },
          "version": {
              "type": "string",
              "description": "The version of the plugin."
          },
          "plugin_type": {
              "type": "string",
              "description": "Sub-type of plugin. e.g. sentimentPlugin"
          },
          "extra_params": {
              "type": "object"
          }
      }
  }