original_string: public function offsetGet( $name ) {
  		if ( ! array_key_exists( $name, $this->variables ) ) {
  			$this->variables[ $name ] = new Variable( $name );
  		}
  
  		return $this->variables[ $name ];
  	}
code: public function offsetGet( $name ) {
  		if ( ! array_key_exists( $name, $this->variables ) ) {
  			$this->variables[ $name ] = new Variable( $name );
  		}
  
  		return $this->variables[ $name ];
  	}
code_tokens: public function offsetGet ( $ name ) { if ( ! array_key_exists ( $ name , $ this -> variables ) ) { $ this -> variables [ $ name ] = new Variable ( $ name ) ; } return $ this -> variables [ $ name ] ; }
docstring: Retrieve a variable by name.
  
  @param  string $name
  @return Variable
docstring_tokens: Retrieve a variable by name .