[source, ruby]
----
response = client.indices.analyze(
  body: {
    tokenizer: 'keyword',
    char_filter: [
      {
        type: 'mapping',
        mappings: [
          '٠ => 0',
          '١ => 1',
          '٢ => 2',
          '٣ => 3',
          '٤ => 4',
          '٥ => 5',
          '٦ => 6',
          '٧ => 7',
          '٨ => 8',
          '٩ => 9'
        ]
      }
    ],
    text: 'My license plate is ٢٥٠١٥'
  }
)
puts response
----
