original_string: protected function _getQuotedSchema($schema = null)
      {
          if ($schema === null) {
              return null;
          }
          return $this->_adapter->quoteIdentifier($schema, true) . '.';
      }
code: protected function _getQuotedSchema($schema = null)
      {
          if ($schema === null) {
              return null;
          }
          return $this->_adapter->quoteIdentifier($schema, true) . '.';
      }
code_tokens: protected function _getQuotedSchema ( $ schema = null ) { if ( $ schema === null ) { return null ; } return $ this -> _adapter -> quoteIdentifier ( $ schema , true ) . '.' ; }
docstring: Return a quoted schema name
  
  @param string   $schema  The schema name OPTIONAL
  @return string|null
docstring_tokens: Return a quoted schema name