How to use csv converter encoding in ruby?

require 'csv'module Expertus class Dataset < Array  attr_accessor :data_type, :udc_id, :filename_suffix# knows its common_udc_id and data type  def initialize *args    CSV::Converters[:non_octal_integer] = lambda { |f|     begin      e = f.encode(CSV::ConverterEncoding)      unless e == "0"        if e.starts_with? "0"          return f        end      end    rescue      return f    end    Integer(f.encode(CSV::ConverterEncoding)) rescue f  }  CSV::Converters[:non_octal_float] = lambda { |f|    begin      e = f.encode(CSV::ConverterEncoding)      unless e.starts_with? "0."        if e.starts_with? "0"          return f        end      end    rescue      return f    end    Float(f.encode(CSV::ConverterEncoding)) rescue f  }  CSV::Converters[:string_to_bool] =->(f) {    ['true', 'false'].include?(f) ? f=='true' : f  }  @csv_options = {:converters => [:non_octal_integer, :non_octal_float, :string_to_bool]}  @data_type = nil  @udc_id = nil  @filename_suffix = nil  superenddef expected_output_filename    return "#{@udc_id}_#{@data_type}#{@filename_suffix}.csv"enddef read_expected_output_file_from_directory! directory  if directory.is_a? String    p "Directory/File:::: #{File.join(directory, self.expected_output_filename)}"    p "@csv_options::: #{@csv_options}"    csv_data = CSV.read File.join(directory, self.expected_output_filename), @csv_options  else    csv_data = CSV.new(directory, @csv_options).read  end  csv_data[0].map! { |h| h.to_sym }  self.clear  self.replace csv_dataend

I am calling read_expected_output_file_from_directory method in my jRuby script like:

expected_dataset.read_expected_output_file_from_directory! File.join($session.script_dir, '..', 'expectedresults')

It is throwing an error:

["wrong number of arguments (given 2, expected 1) (ArgumentError)"]

/home/eip/jruby-9.4.5.0/lib/ruby/stdlib/csv.rb:1821:in `read'

Any help is appreciated ? Thanks