code: private void createColumn() {
  		connection.addColumn(SpatialReferenceSystem.TABLE_NAME, COLUMN_NAME,
  				COLUMN_DEF);
  
  		// Update the existing known SRS values
  		updateDefinition(GeoPackageProperties.getIntegerProperty(
  				PropertyConstants.WGS_84, PropertyConstants.SRS_ID),
  				GeoPackageProperties.getProperty(PropertyConstants.WGS_84,
  						PropertyConstants.DEFINITION_12_063));
  		updateDefinition(
  				GeoPackageProperties.getIntegerProperty(
  						PropertyConstants.UNDEFINED_CARTESIAN,
  						PropertyConstants.SRS_ID),
  				GeoPackageProperties.getProperty(
  						PropertyConstants.UNDEFINED_CARTESIAN,
  						PropertyConstants.DEFINITION_12_063));
  		updateDefinition(GeoPackageProperties.getIntegerProperty(
  				PropertyConstants.UNDEFINED_GEOGRAPHIC,
  				PropertyConstants.SRS_ID), GeoPackageProperties.getProperty(
  				PropertyConstants.UNDEFINED_GEOGRAPHIC,
  				PropertyConstants.DEFINITION_12_063));
  		updateDefinition(GeoPackageProperties.getIntegerProperty(
  				PropertyConstants.WEB_MERCATOR, PropertyConstants.SRS_ID),
  				GeoPackageProperties.getProperty(
  						PropertyConstants.WEB_MERCATOR,
  						PropertyConstants.DEFINITION_12_063));
  	}
docs: Create the extension column