class_docstr: A container that houses all configurations and services for the application runtime.
  
  @see https://symfony.com/doc/current/service_container.html
class_docstr_tok: ["A","container","that","houses","all","configurations","and","services","for","the","application","runtime",".","@","see","https",":","\/\/symfony.com\/doc\/current\/service_container.html"]
docstr: Returns a parameter registered in the service container
docstr_tok: ["Returns","a","parameter","registered","in","the","service","container"]
code: def get_parameter(self, parameter_name):
      """Returns a parameter registered in the service container"""
      if parameter_name not in self._parameters:
          raise ValueError(
              'ServiceContainer no such parameter: "{}"'.format(
                  parameter_name
              )
          )
  
      return self._parameters[parameter_name]
  
file_path: streamalert/streamalert/scheduled_queries/container/container.py
label_desc: Use image node_id 3 for calling the ServiceContainer obj's underlying member method code with example usage: obj.get_parameter(parameter_name) and returns: self