You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: get_influencers.rb
    path of file: ./repos/elasticsearch-ruby/elasticsearch-api/lib/elasticsearch/api/actions/machine_learning
    
    the code of the file until where you have to start completion: # Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. lic
    
        def get_influencers(arguments = {})
          request_opts = { endpoint: arguments[:endpoint] || 'ml.get_influencers' }

          defined_params = [:job_id].each_with_object({}) do |variable, set_variables|
            set_variables[variable] = arguments[variable] if arguments.key?(variable)
          end
          request_opts[:defined_params] = defined_params unless defined_params.empty?

          raise ArgumentError, "Required argument 'job_id' missing" unless arguments[:job_id]

          arguments = arguments.clone
          headers = arguments.delete(:headers) || {}

          body = arguments.delete(:body)

          _job_id = arguments.delete(:job_id)

          method = if body
                     Elasticsearch::API::HTTP_POST
                   else
                     Elasticsearch::API::HTTP_GET
                   end