org.apache.poi.ss.formula

## Interface ExternSheetReferenceToken

- All Known Implementing Classes:
    Area3DPtg, Ref3DPtg

      public interface ExternSheetReferenceToken

  Should be implemented by any `Ptg` subclass that needs has an extern sheet index
  For POI internal use only
  Author:
    Josh Micich

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.String` | `format2DRefAsString()`
    `int` | `getExternSheetIndex()`

- - ### Method Detail

    - #### getExternSheetIndex

          int getExternSheetIndex()

    - #### format2DRefAsString

          java.lang.String format2DRefAsString()

      Returns:
        formula text for this reference token without the qualifying sheet name

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