def find_converter from, to
      @converters.find { |converter| converter.from == from && converter.to == to }
    end
def find_converter from, to
      @converters.find { |converter| converter.from == from && converter.to == to }
    end
def find_converter from , to @converters . find { | converter | converter . from == from && converter . to == to } end
Find converter
Find converter