question: private ColumnError makeDuplicateRoleError ( Entry < String , List < Integer > > roleEntry ) { final String duplicateRoleMessage = I18N . getGUILabel ( "io.dataimport.step.data_column_configuration.error_table.column_error.duplicate_role_message" , roleEntry . getKey ( ) , listToString ( roleEntry . getValue ( ) ) ) ; return new ColumnError ( roleEntry . getValue ( ) , roleEntry . getKey ( ) , duplicateRoleMessage ) ; }
target:  Creates an error for the given roleEntry.