# findFieldsByExtension method

FieldList findFieldsByExtension(

1. FieldExtensionType fieldExtensionType

)

Finds fields by extension type.

param fieldExtensionType The field extension type. return The list of fields with the extension. throws BiosealException An error has occurred during Bioseal Library execution.

## Implementation

    FieldList findFieldsByExtension(FieldExtensionType fieldExtensionType) {
      FieldList resultFieldList = FieldList();
      var err = biosealSDK.id3Bioseal_FindFieldsByExtension(_pHandle.value, fieldExtensionType.value, resultFieldList.handle);
      if (err != BiosealError.success.value) {
        resultFieldList.dispose();
        throw BiosealException(err);
      }
      return resultFieldList;
    }