original_string: protected function setNullableFields()
      {
          foreach ($this->nullableFromArray($this->getAttributes()) as $key => $value) {
              $this->attributes[$key] = $this->nullIfEmpty($value, $key);
          }
      }
code: protected function setNullableFields()
      {
          foreach ($this->nullableFromArray($this->getAttributes()) as $key => $value) {
              $this->attributes[$key] = $this->nullIfEmpty($value, $key);
          }
      }
code_tokens: protected function setNullableFields ( ) { foreach ( $ this -> nullableFromArray ( $ this -> getAttributes ( ) ) as $ key => $ value ) { $ this -> attributes [ $ key ] = $ this -> nullIfEmpty ( $ value , $ key ) ; } }
docstring: Set empty nullable fields to null.
  
  @since  1.1.0
  
  @return void
docstring_tokens: Set empty nullable fields to null .