查找消息结构 API

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  "num_messages_analyzed" : 22,
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  "format" : "semi_structured_text",
  "multiline_start_pattern" : "^\\[\\b\\d{4}-\\d{2}-\\d{2}[T ]\\d{2}:\\d{2}",
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  "mappings" : {
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      }
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        "date" : {
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          "timezone" : "{{ event.timezone }}",
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            "ISO8601"
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        }
      },
      {
        "remove" : {
          "field" : "timestamp"
        }
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