original_string: public function addColumn(ColumnSchema $schema)
      {
          $key = strtolower($schema->name);
  
          $this->columns[$key] = $schema;
      }
code: public function addColumn(ColumnSchema $schema)
      {
          $key = strtolower($schema->name);
  
          $this->columns[$key] = $schema;
      }
code_tokens: public function addColumn ( ColumnSchema $ schema ) { $ key = strtolower ( $ schema -> name ) ; $ this -> columns [ $ key ] = $ schema ; }
docstring: Sets the named column metadata.
  
  @param ColumnSchema $schema
docstring_tokens: Sets the named column metadata .