void renameTable(String currentTableName, String newName)

Validates and renames a table in schema.

Source 

void renameTable(String currentTableName, String newName) {
  var table = schema.tableForName(currentTableName);
  if (table == null) {
    throw new SchemaException("Table $currentTableName does not exist.");
  }

  schema.renameTable(table, newName);
  if (store != null) {
    commands.addAll(store.renameTable(table, newName));
  }
}