# Missed Elements properties in doc:

```
Button extends FormElement
```

'#name'
'#executes_submit_callback'
'#submit' 

```
Checkbox extends FormElement
```

'#value'
'#checked'
'#error_no_message'
'#group'
'#fieldset'


```
Checkboxes extends FormElement
```

'#value'
'#form_test_required_error'
'#size' 
'#multiple' 
'#element_validate' 
'#limit_validation_errors'
'#validated'


```
Color extends FormElement
```

'#step'


```
Container extends RenderElement
```

'#parents'
'#element_validate'
'#entity_type'
'#bundle_label'
'#block'
'#group'
'#fieldset'


```
Date extends FormElement
```

'#value' 
'#error_no_message'
'#date_date_format'
'#datepicker'
'#expected_value'
'#date_timezone'


```
Details extends RenderElement
```

'#children_errors'
'#optional'
'#groups'
'#collapsed'

```
Email extends FormElement
```

'#value'
'#placeholder'
'#maxlength'
'#wrapper_attributes'


```
Fieldset extends RenderElement
```

'#cardinality'
'#target_bundles'
'#collapsible'
'#group'


```
File extends FormElement
```

'#name'
'#upload_validators'
'#upload_location'
'#maxlength'
'#error_no_message'

```
Form extends RenderElement
```

'#build_id'

```
Hidden extends FormElement
```

'#value'
'#name'

```
HtmlTag extends RenderElement
```

'#browsers'

```
ImageButton extends Submit
```

'#name'
'#src'
'#op'
'#limit_validation_errors'

```
InlineTemplate extends RenderElement
```

'#cell_attributes'

```
Item extends FormElement
```

'#value'
'#wrapper_attributes'

```
Label extends RenderElement
```

'#wrapper_attributes'
'#title_display'
'#attributes'
'#title'

```
LanguageSelect extends FormElement
```

'#languages'
'#options'
'#empty_option'
'#empty_value'

```
Link extends RenderElement
```

'#options'
'#ajax'
'#wrapper_attributes'


```
Number extends FormElement
```

'#maxlength'
'#placeholder'“
'#size'


```
Page extends RenderElement
```

'#show_messages'
'#input'

```
Password extends FormElement
```

'#error_no_message'
'#value'


```
Radio extends FormElement
```

'#error_no_message'
'#return_value'
'#value'

```
Radios extends FormElement
```

'#wrapper_attributes'

```
Range extends Number
```

'#step'

```
Search extends FormElement
```

'#placeholder'


```
StatusMessages extends RenderElement
```

'#include_fallback'

```
StatusReport extends RenderElement
```

'#requirements'

```
Submit extends Button
```

'#button_type'

```
Table extends FormElement
```

'#colgroups'

```
Tableselect extends Table
```

'#not_found'

```
Tel extends FormElement
```

'#placeholder'

```
Textarea extends FormElement
```

'#placeholder'
'#field_has_data'
'#field_name'

```
Textfield extends FormElement
```

'#placeholder'

```
Url extends FormElement
```

'#maxlength'
'#placeholder'
'#link_type'