public function isValueChanged($field)
    {
        if (!$this->IsNullable($field)) {
            return false;
        }

        return isset($this->nullableChanged[$field]);
    }
public function isValueChanged($field)
    {
        if (!$this->IsNullable($field)) {
            return false;
        }

        return isset($this->nullableChanged[$field]);
    }
public function isValueChanged ( $ field ) { if ( ! $ this -> IsNullable ( $ field ) ) { return false ; } return isset ( $ this -> nullableChanged [ $ field ] ) ; }
Check if the given field is nullable and if it should be included in the request

@param $field

@return bool
@internal param $value
Check if the given field is nullable and if it should be included in the request