@Override
  public String convertSchema(Schema inputSchema, WorkUnitState workUnit) throws SchemaConversionException {
    return EnvelopeSchemaConverter.class.getName();
  }
@ Override public String convertSchema ( Schema inputSchema , WorkUnitState workUnit ) throws SchemaConversionException { return EnvelopeSchemaConverter . class . getName ( ) ; }
Do nothing, actual schema must be obtained from records.