original_string: public function isValueChanged($field)
      {
          if (!$this->IsNullable($field)) {
              return false;
          }
  
          return isset($this->nullableChanged[$field]);
      }
code: public function isValueChanged($field)
      {
          if (!$this->IsNullable($field)) {
              return false;
          }
  
          return isset($this->nullableChanged[$field]);
      }
code_tokens: public function isValueChanged ( $ field ) { if ( ! $ this -> IsNullable ( $ field ) ) { return false ; } return isset ( $ this -> nullableChanged [ $ field ] ) ; }
docstring: Check if the given field is nullable and if it should be included in the request
  
  @param $field
  
  @return bool
  @internal param $value
docstring_tokens: Check if the given field is nullable and if it should be included in the request