protected function explicitlyConfiguredForeignKeysNullable()
    {
        $nullable = array_get($this->formFieldData->options(), 'nullable_key');

        if (null === $nullable) return null;

        return (bool) $nullable;
    }
protected function explicitlyConfiguredForeignKeysNullable()
    {
        $nullable = array_get($this->formFieldData->options(), 'nullable_key');

        if (null === $nullable) return null;

        return (bool) $nullable;
    }
protected function explicitlyConfiguredForeignKeysNullable ( ) { $ nullable = array_get ( $ this -> formFieldData -> options ( ) , 'nullable_key' ) ; if ( null === $ nullable ) return null ; return ( bool ) $ nullable ; }
Returns whether the relation's foreign keys were configured nullable.

@return bool|null    null if the nullabillity of the keys was not configured
Returns whether the relation s foreign keys were configured nullable .