offsetSet(string $name, FormInterface $child)
Adds a child to the form (implements the \ArrayAccess interface).
offsetSet(string $name, FormInterface $child)
Adds a child to the form (implements the \ArrayAccess interface).
| string | $name | Ignored. The name of the child is used |
| FormInterface | $child | The child to be added |
| AlreadySubmittedException | If the form has already been submitted. |
| LogicException | When trying to add a child to a non-compound form. |
| self::add() |
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