[NFR]: Multiple parameter and return types

[noone-silent]

Allow multiple class return types:

test() -> <Model> | <Row> | null
// or
test() -> <Model | Row> | null

Allow multiple parameter types:

test(array | null data) -> void

[Jeckerson]

Allow multiple class return types

This feature already exists.

[noone-silent]

Allow multiple class return types

This feature already exists.

Probably in C, but not in the generated stub files:

• Download cphalcon
• Change Method return types of findFirst to <ModelInterface> | <Row> | null
• generate, compile and create stubs

Generated stubs is:

     * @return \Phalcon\Mvc\ModelInterface|\Phalcon\Mvc\Model\Row|null
     */
    public static function findFirst($parameters = null): ModelInterface|null
    {
    }