original_string: public function getRelation($relationName) {
          $relationInstance = null;
          if (isset($this->relations[$relationName])) {
              $relationInstance = $this->relations[$relationName];
          }
          return $relationInstance;
      }
code: public function getRelation($relationName) {
          $relationInstance = null;
          if (isset($this->relations[$relationName])) {
              $relationInstance = $this->relations[$relationName];
          }
          return $relationInstance;
      }
code_tokens: public function getRelation ( $ relationName ) { $ relationInstance = null ; if ( isset ( $ this -> relations [ $ relationName ] ) ) { $ relationInstance = $ this -> relations [ $ relationName ] ; } return $ relationInstance ; }
docstring: Get a relation bby its name.
  @param string $relationName
  @return Relation
docstring_tokens: Get a relation bby its name .